II. URBAN sPACE AND VIsUALITY IN THE ARCHITECTURAL WAY OF THINKING RELATION BETWEEN CREATIVITY AND PLANNED REGULATION IN THE PROCESS OF SHAPING URBAN SKYLINE

The subject matter of this paper belongs to multidisciplinary field consisted pri­ mary of urbanism and a part of it – urban design, as well as architecture and other fields, like aesthetics, psychology and economy, which supplement certain standpoints. Urban skyline of cities or large parts of the cities, as urban macro­ images, are considered in relation to the nature of their origin – self­generated or being effect of the plan, through phenomenon of visual experience and appli­ cation of new technologies on facades. The question is which ratio of creativity and planned regulation is optimal in the process of creating visually concur­ rent urban skylines. If planned solution of total macro­image is done well, the answer is: all regulations should be kept and creativity has no limits. In other cases, it is necessary to establish flexible scope of regulations, so that single elements of urban skyline could be realized in balance between limitations and desired result.

and more specific, height regulation and positioning of urban landmarks, there are papers of Samer AbuGhazalah (AbuGhazalah 2007) and John Zacharias (Zacharias 1999); for aesthetical / visual regulation Arthur Stamps III, Jack L. Nasar and Kazunori Hanyu (Stamps et al. 2005), also Tom Heath, Sandy G. Smith and Bill Lim (Heath et al. 2000).
The notion of creativity in the scope of subject matter of modern urban form and urban planning is present in popular works of authors such as Richard Florida (Florida 2002), Charles Landry and Franco Bianchini (Landry, Bianchini 1995), which empha size the idea of "creative city". "Creative city approach" has been often criticized, but in any case, creativity has become a major keyword in city planning and urban mar keting policies around the world. "Creative urban concept, which has been proposed in the last two decades in order to achieve sustainability of the cities and to gener ate creative policies in cities, has gained importance on the global level" (Görgülü 20072: 81). Creativity and culture are often related within urban development strat egies. In that sense, culture more and more becomes the business of cities (Zukin 1995), and cultural policy since the 1980's became a response to the globalisation of capital. Relation between creativity and planned regulation in the process of shaping urban skyline is not covered by professional literature.
This study is based upon main methodological, dialectic, couples: analysissynthe sis and rationalempirical method. In combination with these basic scientific methods, there is auxiliarydescriptive method.

Creativity
There is large number of general definitions of creativity. It is thinking process to generate ideas which are innovative and functional, new notions, solutions of prob lems or new relations between existing ideas or notions. "New" could be partly or completely new. Creativity is also a creation of existing object with new characteris tics, as well as imagining new possibilities which no one has thought out before, as well as performing something in a different manner and looking at something from a different, new, perspective which was not considered to be normal or possible. "That new something has some kind of value. What counts as "new" may be in reference to the individual creator, or to the society or domain within which the novelty occurs. What counts as "valuable" is similarly defined in a variety of ways. Theories of crea tivity have focused on a variety of aspects. The most dominant are usually identified as the four "Ps" -process, product, person and place" (Wikipedia… 2011).
All this sounds reasonable. However, it does not really help a planner who is strug gling in his or her daytoday work with legal regulations, financial rules and po litical and community sensitivities and considerations. Whenever he or she creates new plans or develops approaches to solve certain problems, he or she is soon re minded not to forget about the feasibility of the original idea. In this context, Klaus R. Kunzmann could be quoted: "Csikszentmihalyi's definition of creativity is very useful -Creativity is any act, idea, or product that changes an existing domain, or that transforms an existing domain into a new one. And his definition of a creative person is -someone whose thoughts or action change a domain, or establish a domain". Here Kunzmann adds that "being creative for a planner means in addition that he or she occasionally has to be an urban or regional guerrilla to undermine established bureau cratic and political agenda" (Kunzmann 2004: 385).
In the simplest formulation of "creative city" the main idea is that capitalist de velopment today has moved to a new distinctive phase, in which the driving force of the economy is not simply technological or organizational, but human. The "creative class" is a vague category, including basically those engaged in knowledge -intensive works, whose function is to "create meaningful new forms", such as artists, scientists, analysts, business managers, opinion makers (Florida 2003: 8). They are today the "dominant class in the society" (Florida 2002: ix), which refers to the core of econom ic growth in developed countries. Such creative professionals want to live in quality, creative, tolerant and exciting places. Therefore, "a key question for urban planning refers to the possibility of promoting creative environments and 'cool city' images in order to attract these professionals" (Vanolo 2008: 370).
Tülin Görgülü writes that "Richard Florida talks about 3T in relation to the de velopment of the creative capital: technology, talent and tolerance. For a place to at tract creative people, to open a gateway for innovation and to reinforce the economic growth, these three factors should go hand in hand. Florida points out three features which are important in order for a city to has creative status: new ideas, an environ ment which have the facilities of a high technology and regional development and growth" (Görgülü 20072: 83).
We are living in the century of knowledge, technology and communication. High accessibility of information offers infinite choices to people, so that creativity becomes the key word for competency. Creativity is an important input in every aspect of our lives.

2. Urban skyline
Using word "silhouette" in urban context, that is, skyline or urban skyline, in relation to objects on horizon, is from new days -not before 1876 and it became usual from 1890's (Kostof 1991: 279). Traditional meaning of urban skyline is that is the line which separates earth from sky. Or "the line where earth and sky meet each other" (Kostof 1991: 279). It is created by combination of natural elements (trees, mountains, sea, etc.) and those made by humans (architecture). It is product of few civilizations and formed during number of years. That is why it differs from city to city. During long periods of time it was influenced by natural, geographical, historical, social, cul tural, religious, technological and economical factors.
Today urban skyline represents vertical plan (projection) of urban micro-form of city, or larger city areas (in the sense of space). It could be said that it is macro urban image as well. Skyline of spatial urban pattern (physical structure of city) is the expression of series of individual and predominant units which make primary form, 135 limes: Borderland studies, 2011, Vol. 4, No. 2: 131-149 in combination with morphology of ground and secondary spatial forms. Dominant objects (primary form) form basic "grid" of spatial expression of city. And opposite to them, secondary spatial forms, merge without standing out from the surface of skyline.
Germans used to call urban skyline "city portrait" or Stadtbild (Kostof 1991: 279). Also, the idea of using term "urban profile" for the purpose of expressing characteristic elements of urban skyline is not new. Artists for a long time single out noticeable structures on the line of horizon and convert them into impressionistic presentations of city's physical form. Urban profile is more narrow term -the essence or sketch of vertical projection of urban form, than urban skyline, which is wider no tion, which incorporates total picture, architecture, as well as topography, in other words, relation between architecture and place and its position.
Notions of (urban) skyline and (urban) panorama are often used in equal meaning even though there is difference between them. Urban skyline represents vertical plan (projection) of urban form, that is, its two dimensional presentation (2D). Panorama represents three dimensional presentations (3D) of urban form, watching it from an elevated point (3D). We can conclude from panorama what skyline look like, but sky line gives us more accurate information because of the better tone contrast of urban projection which is bordered with contour and sky above it, as well as of high defini tion of contour itself.
The main attribute of skyline is instantaneous recognizability, and it could be achieved only by characteristic form of observed object. In the event of similarity, we must identify uniqueness. Today, fast construction of uniformed city segments repre sents one of the ways of global initiation of city which has larger, international, ambi tions. The secret logic of form is in repeating the same pattern (which was imposed by American skyscrapers and continued by business towers from 1960's), like a guaran tee and symbol of progress. Total urban image is the same, while particularities could be identified in details -treatment of public areas, traffic connections with other parts of the city, (none) achieved harmonization of different levels of perception or symboli cally emphasized landmarks. Form of landmark often enables instantaneous recogni tion, which confirms earlier mentioned definition of basic attribute of skyline.

3. Regulation of urban skyline
Urban skyline is main representative of visual identity of urban form. Urban regula tions (on the level of planning or specific laws and regulations) which could impose visually concurrent macro image, that is, by urban regulations we could impact on its affirmation and desirable shape, could be summarized through four fields (Lukić 2010: 62-64): -Aesthetic / visual regulation The beginning of establishing of regulation draws back to the last century, it was suggested by Lynch who was one of the pioneers, he states that "it should be lead by "visual plan": series of recommendations and regulations <...> all in concern of visual form in urban scale" (Stamps et al. 2005: 73).
Every city should have its own regulations about its urban skyline so that it could establish its character and coherency, in order to be visually recognizable, attractive, and distinguished by visual quality. Visual value (quality) of urban skyline is reflected in its ability to satisfy certain human needs, in this case, need for pleasantness, beau ty and stimulation, needs for orientation and perception of space which are used for its better utilization. Visual value of urban space originates from specific, above all, space values which are realized by means of architecture and urbanism: formal, which depend on geometric forms of objects, its size, illumination; artistic, refers to those which take into account creation of architectural objects as artistic work / expres sion; aesthetical, which represents human aspiration for harmony, specific emotional mood, expressiveness of urban space and architectural form. For aesthetical quality "tough" professionals and those sociologically orientated claim that it is trivial subject of discussion. Nevertheless, there are strong evidences that "aesthetic attitudes are the most important when population of the city estimates the quality of the environment (Dornbusch & Gelb)" (Heath et al. 2000: 542);

-Height regulation
During history and today, there was not height regulation in some cities and in the cities where it existed; it could be strict or flexible. American cities are very heteroge neous about this. In Philadelphia, for a long period of time, no structure could be hi gher than statue of William Penn which is on the top of City Hall, 500 ft (~152 m) (Ford 1992: 181). In Washington D. C., Washington Monument is still higher then central part of the city. "Washington is the nation's horizontal city, thanks to an unrepealed Act of 1910 which set the maximum building height at 130 feet (39.6 m)" (Kostof 1991: 312). If city authorities are serious about conserving central symbols, they have to pass the laws and establish regulations. Symbolic importance of the Capitol Building is greatly dependent on the visual prominence of the Capitol dome as a unique form on the city skyline so that no new development should extend above the base of the dome.
in America, there are few cities that lead in this -madison, Wisconsin, etc. Other cities do not have any limitations -New York (see Fig. 1) and Chicago are the right examples. In these two cities business corporations energetically compete with each other to be visible in city skyline. When cities do not have consensus about city tower, everyone tends to build one.
In Europe, after WWII expansion of building skyscrapers has been accepted trau matically, contrary to America. Visual impact of the tall building on an American grid is quite different from the unpredictable impact within more complicated and older European urban pattern. In Denmark and Holland local authorities had the pow er to prevent the erection of tall buildings. For building of residential towers which appeared everywhere through Europe, was too late. In Germany, in most of its cities, only historic centre had evaded that destiny. Right next to it, the skyscrapers often make their stand (see Fig. 2);

-Regulation of view corridors (important vistas)
Skyline of the city could be perceived only by observing it from a long distance (long view) which incorporates larger part of the city and neglects details of space elements. Corridor of view depends on the type of approach, that is, it depends on the posi tion of the standing point and field of vision. Traditionally, there are three types of urban skyline views that mattered -from approach roads by land, waterfront views along a river or the seacoast and the views from high vantage points (natural view ing platforms) or from the summits of tall buildings. Waterfront view gives vertical plan of urban form -urban skyline, as well as approach to the roads. The angle of corridor of view is largest approaching through water and from high vantage points. "Land routes focus the city more intently. Composing desirable scene could be manipulated by the direction of roads. This practice of directing approach routes toward skyline features is persistent one" (Kostof 1991: 315).
This field of regulation concerns partly height regulation, too. The height of certa in objects is limited to protect valuable views on natural beauties or valuable architec tural works. For example, Denver, Montreal and Vancouver seriously limits the height of objects so that they could protect a view on mountains in background of their urban skyline. In Montreal and Vancouver, multiplication of standing points leads to identi fication of 18 and 26 protected views (Zacharias 1999: 217); -Choosing locations for positioning urban landmarks Locating skyscrapers and other attractive city landmarks spontaneously contrib utes to the poor image of urban skyline. Their location must be carefully selected, it must be appropriate and justified. Also, grouping and effects of combining should be carefully inspected. A tall building should suggest important location. Group of tall buildings should be attractive and located justifiably. In the opposite case, it happened that phenomenon of tall buildings is wrongly comprehended and consequently, even worse applied, which violets the appearance of urban space and could be observed on urban skyline. The studies state that it is important to define zones, districts, where skyscrapers could be built, and, also, they should be carefully located within those zones (preferably in the centre, edges, etc.) (see Fig. 3). 2. Different relations in the process of shaping urban skyline

1. Creativity and urban skyline
In this paper urban skyline in the function of macro image of a city is not taken into concern in a sense of general meaning and idea of a place, but as visual image, more exactly, from the visual point of view. It is important to construct positive and charm ing images, various and interesting as a fundamental tool for attracting global flows of tourism and investments to promote local development. Every city should define and promote its specific attributes and competitive advantages and to find the way to differ from other cities, that could be applied to urban skyline, too. Creativity is evaluated as one of the most important aspect of creation in the global world.
How to identify creativity on urban skyline or what is it that is creative in visual sense on urban skyline? There are many answers to that question, considering various aspects stated below: -New (architectural) ideas It is important that urban macroimage has its landmarks with a big idea "some thing unique, something extraordinary, something that will give them chance to be proud of and something to make it significant place in global itinerary <…>" (Kostof 1991: 279). Landmarks can in that sense improve visual identity and put the city on memorable map of the world.
Highly developed environments today has clear need for more quality, more at tractive and original design in every aspect of life. Quality of modelling is more and more important. By favouring city economy, tourism, needs for making strong local identity, appears the requirement for attractive objects and areas in the city which could be seen on urban skyline and become landmark which structure a city and gives it more attractive image.
New architectural ideas make primary form of urban skyline and model its basic "grid". These ideas are incarnated in skyscrapers and other distinct volume -authen tic forms or significant dimensions comparing to environment, but without tendency to grow in height. Competing in height of objects certainly brings global recogniz ability, but the same goal could be achieved by specific form, adding symbolic ele ments. Distinct form in relation to morphology of ground becomes element of visual identification.
Presence of cultural actors -like museums, theatres and concert halls, strongly impacts on character of urban fabric, in economical as well as in modelling sense. Incorporating them in city context add value to the content in their environment and land, gives new swing to the development of the city and opens new possibilities for empowering cultural economy. In that way, these specific accents, often became key points for recognizability of urban skyline, new places for gathering, also expressive scenography for modern spectacles and celebrations. Culture and spectacle became two key points around which are formed skeleton of new urban attractiveness; -New ideas about all-inclusive shape of urban skyline -"any act, idea, or prod uct that changes an existing domain, or that transforms an existing domain into a new one" (mentioned in section 1. 1).
Changes lead to urban skyline shape which is characterized by: clarity (by which city could be experienced and recognized -clarity of recognition; clear, arranged rela tions), clear comprehension, readability (with what form elements could be connected with certain places and events in time and space; integration of complexness, change ability and harmonization of all elements so that need for orienting, view, communica tion, identification could be satisfied), recognizability, specialty (so that shape of its total contour is specific, by which it could be impressed in mind of city users, and by which stronger visual identity could be achieved); harmonization of urban skyline by excluding exaggerated diversity; "allinclusive shape is the most obvious when the di versity of the attributes of individual objects is low, when diversity is high -impression of allinclusive shape is hard to detect" (Stamps et al. 2005: 76); "people estimate that simple (convex) skyline is too still, and they prefer skyline with multiple (sinusoid), in other words, convexconcave changes in shape") (Stamps et al. 2005: 76); -New relations between existing and new elements of skyline Integration of old / inherited and new, in other words, urban environment that inte grates inherited and does not support total reconstruction. This type of macro images integrate new values into the old and vice versa, and in that way create and promote new qualities. The key point is to maintain balance so that general character is not violated. But, "there are situations when old structures don't satisfy modern require ments" (Tošković 2004: 9).
Creativity could be interpreted from new relations between natural and artificial environment. One of the more specific examples of new relations could be this: if people have different choices about the question of combination of shapes, colors and arrange ments of objects on city skyline, they are also capable to make choices to include nat ural elements in combination with buildings. In that sense, sometimes, a combination between buildings and natural environment is more important than visible natural environment. Creativity lies in creating the "right" combination. These are hypothesis from some designer directives which were made to form picturesque urban skyline (Zacharias 1999: 219); -An environment which has the facilities of a high technology "The 21st century city skyline is a continuation to the 20th century skyline with more emphasis on high technology style of buildings" (АbuGhazalah 2007: 49) and that difference from skyline of earlier epochs is the characteristic of creativity.
New information technologies and their application on facades (media architecture and digitalization, creating of urban sensation) want "nice buildings". This discourse is enough to show that architecture is now a sign and is one of the consumed objects. To create a sign is one of the most important steps of the creation process. Creative 141 limes: Borderland studies, 2011, Vol. 4, No. 2: 131-149 policies of creative global cities are highlighted with creative design and physical en vironment. Architectural medium have more irrational, formalist and more preten tious form now than ever before.
McNeill states Eric Höweler's categorization of the latest generation of skyscrap ers where he identifies "mediatic" examples which are "choreographed, not designed <…> a shift from the purely quantitative (how tall) to the design of urban effect (how spectacular)". Here, "the facades of buildings are designed to allow light shows, a highresolution animation, in effect becoming projection screens for a new form of urban sensation, that manifest a presence in excess of their physical dimensions -a kind of hyper-presence. The impact of these designs can be dramatic, but can also be seen as a simple extension of the ways in which major buildings have always dominated their surroundings through projection, traced back to the bellringing of medieval ca thedrals" (McNeill 2005: 47).
Creative would be to manage to create certain quality of magic on urban sky line using new technologies which will show that fantasy is possible. Besides the new technologies, magic is based upon certain hedonistic frame of mind, on signs, colors, night lights and other picturesque characteristics; -New approaches to the urban skyline -considering it in completely differ ent manner than usually we do. New approach to urban skyline, new phenomenon of visual experience, is manifested through novel theoretical framework that brings together the fields of urban geography and visual culture, constituting to it a notion of emotive geography. The backbone of this framework is the dialectic of encapsulation / decapsulation. "The dialectic refers to a volatile process of spatial production, based upon the interplay between subjective gazing and strategic urban landscaping and scripting. The encapsulation process -the creation of the city as a coherent realm of experience -involves a blending of politicized spaces of representation and spatial attachment, articulating what we will call politicoemotive geographies that invoke a range of feelings. These include, for example, awe, fascination and pride, sometimes to be replaced, through decapsulation, by disenchantment or intellectual problematic. Through the dialectic of encapsulation / decapsulation we can also deepen our under standing of the symbolic and emotional negotiations involved in the production of the "city as spectacle". The production of spaces of futurity as one form of encapsulation is production of urban panoramas and skylines through two (overlapping) forms: the conjunctional and the hyper-representational" (Jansson, Lagerkvist 2009: 26-27).

Creativity and planned regulation of urban skyline
Considering the relation to the nature of their origin -urban skylines can be self generated or being effect of the plan.

1. Self-generated urban skylines
Selfgenerated settlements and cities and its constructors especially take into account natural conditions, they connect to the ground (terrain). It is important because the main attributes of urban form as well as its macro images, are created on the basis of that relation.
In many cases it is the skyline of the traditional city. Every civilization has its own skyline image and every of them were characterized by its high objects. The skyline of every next civilisation in relation to the preceding one is characterized by new shapes of that objects, so, it could be said that creativity is present there as well. Main difference between skyline of traditional and modern, later, global city is nonexist ence of extremely high objects, like skyscrapers. There are small high differences from pretty uniformed height of total form of the city, and height difference between city landmarks and other, mainly compact urban form, are not as extreme as when there are skyscrapers.
It should not be taken for granted that skyline created in this way is characterized with more creativity because there were not any strict rules to oblige like when the planned regulation is in question. Too much liberty could contribute to the vi sual chaos caused by too much diversity and disperse of its integral parts. Skylines of the cities represent complex application and inexhaustible diversity of dynamic relations which are the consequence of varying horizontal and vertical dimensions of orthogonal, cube elements, and other outstanding forms. Accidental opposition of objects leads us to observe them one by one, while they are grouped in one more or less irrational profile. Since there is not consistent order, such "polyphony" of vi sual pressures could be perceived only as "visual noise", that is, mainly nonstruc tured sensor stimulating, which could be stimulative or disturbing, depending on who is observing. Self-generated urban skylines are creative depending on individual authors of shapes of objects and their sense for narrow and wide context and creating relations between them. Also, important role in all that had historical, geographical, natural, economical, social and religious factors.
In small Italian or French cities, in towns on Greek islands (see Fig. 4), as well, of ten selfgenerated, could be observed harmonically relation between picturesque char acter of its structure and rich diversity, which are manifested on urban skyline.  Borderland studies, 2011, Vol. 4, No. 2: 131-149 Urban structures this kind, which are based on natural ambient and relation with environment give considerably more possibilities for development of diversity, more than strict mechanical structures (VasiljevićTomić 2007: 141-143). Creativity of their macroimage lies exactly in that connection with nature, compact structure, their color specifics and liberty which enable its realization.

Regulated urban skylines
Connecting culture, economy and urban organization, creative solutions and specific areas, creative urban skyline are created as the reaction on particularities of the envi ronment and specific requirements which are generated as result of that environment, but with clearly defined and high raised goal of affirmation of own region and own city and importance of role of planning and urban design. It is very important that there is vision of total urban macroimage and clearly directed and controlled changes toward it (contrary to spontaneous and uncontrolled growth), sense of order and or ganization. In praxis it is realized trough urban regulations. Following connections should be examined:

-Creativity and aesthetic / visual regulation
In most cities the aesthetic / visual dimension of city planning, which includes the planning of urban skyline, is underdeveloped. It is sometimes rigidly limited, for example, "in many communities in the United States use 'design review' to regulate visual quality. Certain number of urban designers and other professionals, criticize this kind of control as wrong, while courts support aesthetic regulations until they are contently neutral" (Stamps et al. 2005: 74).
Also, it is proved that variation of four attributes of individual objects -high, width, depth and distance from regulation line (small, middle or large) -make urban skyline interesting and pleasant, so if they are strictly regulated, it is harder to be creative, while more liberal, contextually independent directives could be useful in that sense (Stamps et al. 2005: 82).
the color is included in the field of aesthetic / visual regulation, because it is one of the attributes of urban skyline. There are regulations which are aimed to preserve contour colors of some cities (Paris is grey (see Fig. 5), San Francisco is white), which is dominant on the skyline. Those regulations must be followed. In Jerusalem, for example, every modern ob ject in suburbs must, by the law, be coated with Jerusalem stone which has natural pastel color in dawn, and again, at sunset, stone gives the city golden gloss (Kostof 1991: 319). Sometimes regulations are more flexible, so more creative solutions could be achieved. For example, when trying to achieve certain plans, desired closeness or distance in relation to present state and emphasizing certain objects or totalities (group of objects) on the city skyline, certain regulations must be followed by every author of the solution within certain given (or recommended) frame, to achieve cer tain illusions in space. The answer in urban context is, mainly, in the terms of harmony with the existing forms of buildings or ensemble. Sometimes the circumstances and planning may give right to the contrastive elements of urban form then harmony. In some cases, where the existing context is inadequate -the new dimension or "key" must be set through a new development, in order to achieve a successful future urban image" (Tošković 2004: 8), what represents creativity; -Creativity and height regulation The architecture which is now produced, along with the creativity, expresses a physical environment in which dimensions are far beyond the size of the human be ings, where power and show off is dominant and competition has become very im portant. However, distinct skyline was not always a need and desire. in some cultures and periods of urban history, cities preserved uniformed, straight profiles. "In ancient China, it was customary to forbid structures higher that two floors, to prevent people to look from above on the Emperor when he was passing by" (Ford 1992: 182). In Cusco (Peru) there is, also, in power, a ban to build above the second floor, for the purpose of preserving visual (architectural) identity of the city (Tucakov 2009: 37).
Sometimes it is permitted to violate the ban on high limitations, for the purpose of creativity and better visual skyline. For example, when shaping skyline, city authori ties liberate certain type of objects from the prevailing height limits. "Los Angeles in 1926 exempted by popular vote its new City Hall from the prevailing 46 m height limit, so it could climb up to almost three times that height and fix the than unremark able skyline" (Kostof 1991: 282).
Zacharias also states the example of Vancouver, in which "the policy was adopted by the city in 1989 which mandated corridors free of buildings toward the mountains. Planners have since become concerned that the policy was producing a table -top skyline of little visual interest. The city later raised the building height limit by one third in selected areas. It is reasoned that a more distinctive skyline with landmark structures will result, even though the mountainous backdrop will be broken in plac es" (Zacharias 1999: 218).
-Creativity and regulation of view corridors (important vistas) When considering view corridor in relation to urban skylines, there are number of questions which, in some way, explore the relation between creativity and height limitations for the purpose of preserving certain visually valuable vistas. For example, is it in some cases creative solution to allow or to limit certain height -is it more im portant to have a view on natural beauty or constructed attractive object or wide view on skyline; is the structure of view more important than total visible pleasantness? Further more, in cities with characteristic natural environment, how should we pro mote development and in the same time preserve view on natural beauties, is the view on natural environment more important than elements made by humans in the unique character and quality of urban skyline, could qualitative loss in pleasantness of the view on natural environment, be compensated by imaginative design, etc. In any case, phenomenon of visual experience in urban space mainly depends on making possible these type of views, because this kind of diversity in manner of understanding urban form contributes to its picturesqueness and attractiveness, diversity in space experien ce. Creativity of various and unusual points of view and diverse approaches to skyline has significant place in forming mental image.
Often there are the intentions of city authorities to preserve intact existent views on pleasant areas on urban skylines. However, that protection is flexible, so that the construction permit is usually given for high objects if it could be demonstrated that significant public beauty of build place will be the compensation of lack of view "while there are no directives or procedures which define what are those benefits from the single build objects" (Lukić 2010: 4); -Creativity and selection of location for positioning urban landmarks Considering that there is small number of skyscrapers which are beautiful them selves and that their number is something which is astonishing, which is best mani fested on skyline, it could be said that their location is very important. Besides form and shape of objects, dimensions, style, material, color, visual connection made by co herent grouping creates feeling of unity of macro image, that is, a certain new quality in relation to value of single, and, for example, distant objects. High objects are often grouped in one district so that humane scale in other parts of city could be preserved.

3. Multidisciplinarity of the subject matter of the paper
Supplemented standpoints of different scientific disciplines (fields) is best to present on concrete example of urban skyline, in this case, Shanghai's. Its resurrection into a metropolis began in the early 1990s. Accelerated capital improvement led to a re markable transformation of the city's spatial form and associated functional activities. More than 4000 high buildings have been built, 13 of which are super high buildings, over 200 meters in height. Changes and urban processes which had brought Shanghai to growing into city of globalisation are well shown on both banks of river Huangpu, trough two, different skylines. On one side of the river, there is new urban skyline of Pudong, hightech financial district.
On the other bank, there is Bund, with preserved old colonial buildings. River Huangpu, in the same time, connects and divides the city; it symbolizes modern impact as well as historic continuity of Shanghai and represents tension be tween old and new, between facts and fantasy. Visitors can decide if they want to look at the symbols of past or turn their backs to it.
On these two urban skylines, creativity is represented by every entry stated in sec tion 2.1. -there are new shapes and original design of objects in Pudong and its recog nizable, specific allinclusive skyline shape, as well as presence of high technologies. Further, in Bund, there are new relations created between preserved old buildings in the foreground of skyline and modern objects in the background, then, specific way of comprehending and approaching to both skylines which are connected by the river into one magical and conjunctional panoramic site.
Fields of economy, psychology (more specific, urban perception which is based on perception psychology, environmental psychology and experimental psychology) and aesthetics (more specific, urban aesthetics) are important for explanation of some phe nomena and elements on urban skylines, and, also, realizations from these disciplines should be used in the process of their shaping, as support for creative actions.
Modern world, economical, global tendencies brought to development of urban marketing, branding of articles of all kind, and one of them is new skyline of Pudong. Futuristic vision of Shangai, is materialized in it, especially in Oriental Pearl TV tow er (height 460 meters) which is an icon today and the incarnation of national and local symbols of modernity (Jansson, Lagerkvist 2009: 34), and unavoidable tourist attrac tion. Economical influence could be noticed in most of regulations of Shanghai sky line, primarily at height regulation. Building height becomes a key marker of identity, success and competition in the built urban environment. The heightening and concen tration of urban skyline, as national trend, as well as district specialization and zone planning are produced, partly, by processes of comprehensive urban planning and ur ban renewal, and joint processes of privatization and investment (Gaubatz 1999(Gaubatz : 1519. The constantly shifting balances of power between the governmental and economical interests have greatly complicated the implementation and enforcement of urban plan ning in China's large and rapidly developing cities. "Although China's urban planners now make use of internationally recognised practices, such as zoning regulations, height restrictions and controlled development, to promote a vision of the character of the city as a whole, their efforts are often blocked by conflicting regulations and regulatory agencies as well as a power structure which permits numerous concessions to be made to highprofile developments. As a result, planning often seems to follow rather than to lead patterns of development and investment" (Gaubatz 1999(Gaubatz : 1514. Urban perception and urban aesthetics could influence a lot the aesthetic / visual regulation, height regulation and regulation of view corridors. Empiric research results about aesthetic preferences of users of urban spaces could be incorporated in regula tions in order to attain aesthetically desirable skylines. In the field where these two disciplines overlap, various aspects of visual and aesthetic experiences of urban form and its projection, urban skyline, could be discussed. "The highest level of aesthetic dimension of macro urban totalities could be defined with tendencies to achieve aes thetic experience as especial state of consciousness (fascination with some aesthetic totalities, images)" (Marković 2007: 159). Aesthetic experience of urban skyline of Pudong could be classified in the category of special aesthetics, it is a result of our in herited curiosity and need for exploration of informationaly stimulated and provoking contents. Application of the principles of visual perception (for example, Gestalt prin ciples) will always improve urban skyline. Knowing, for example, the principle of the relation between form and background, we will know that the impression of gradual fading away of skyline of Pudong into sky originates from irregularity of its contour which was created from highly elevated groups of buildings. On the height of vertical field of vision of urban skyline influences its shape, too. More accurate, exceptional height of already mentioned Oriental Pearl TV tower which dominates the skyline, creates the possibility that the sky is visibly high above it, whereas, for example, in the case where the skyline is mainly flat, the impression is very different.

Conclusions
Urban policies should be based on innovation and creativity, enabling maintaining character and coherence of urban form (and consequently, urbane skyline) as response to social, cultural, economical, technological and / or political development and chang es. That is the way to provide a survival strategy for the visual identity of the city and its skyline. In the ideal case, if planned solution of total macro-image is done well and specific laws and regulations were established in keeping with it, the answer on question, which ratio of creativity and planned regulation is optimal in the process of creating visually concurrent urban skyline, is simple: all regulations should be kept and creativity has no limits. In other cases, it is necessary to establish flexible scope of regulations, so that single elements (architectural objects) of urban skyline could be realized in balance between limitations and desired result.
Regulation of urban skylines should establish values of planning in whole and in details. Instead of strict limitations, creativity of the solutions and predominant char acter of every locality is expressed best by possibilities of flexible application of any regulation. It is important to estimate what scope of regulation is natural. Policies should be formulated to be operative, not to create uniformed skylines without varia tions and articulation. Since there are a lot, often opposite, requirements from private initiative on the one hand, and public interest on the other hand, clearly defined limits (which will not be rigid) should be established to define common ground for negotia tion and find acceptable solution for both sides. That is the way to keep all regulations and, in the same time, to give the space for new ideas and innovative solutions. in this way city planner could realize himself as visionary and designer and architect could approach to the process of shaping segments of urban skyline with more liberty, using the ability and talent to establish balance between limitations and wanted.
Presence of creative administration is important, too. It does not matter if the city is affluent or poor, creative leadership is the key in overcoming lack of ideas, com bating bureaucracy and general apathy. It gives initiatives and clearances for various actions and procedures, including the field of planning, and that is the reason why its important role in creating creative city, that is, creative urban form and its skyline, must be emphasized.