Only the small open window on a ceiling projects a solar beams on a floor which in turn serves as the projective screen. Ksenakis has learnt this lesson well and has applied its at creation of Diatopa, only instead of a sunlight on a floor Xenakis were projected a light flashes and laser beams. The crisis of the town-planning which has been especially sharply designated in the XX-th century, has led to origin of the new concepts offering various decision of the modern city problem. The great resonance what received by Le Corbusier’s and J.Xenakis’s ideas. 3. “radiant city” by Le Corbusie and “Vertical city” (“Cosmic city”) by I.Xenakis. Le Corbusier thought, that city is a symbol of struggle between the person and nature, a symbol of his victory over it. It is the man-made organism, called to protect the person and to create the conditions for his work. It is a result of human creativity, but this is not chaotic creativity and connected with mission of a city and environment. “The city is an instrument for work. Cities do not carry out their normal appointment any more. They become fruitless; they wear out a body and conflict with common sense. The growing anarchy of cities is offensive, their degeneration will continuously wound our vanity, touches our self-respect. Cities are not worthy of their epoch, they are not worthy of US”6. Understanding uniqueness and originality of this or that city, of its individual “profiles”, Corbusier has put forward the theory of “radiant city”, constructed on a linear principle. But it is significant that Corbusier’s poetic dream about rapprochement of the person with the nature has nothing common with sentimental idyll of a rural life. It is the rational decision of a town-planning problem, creation of the most effective environment for work and rest. Le Corbusier architecture shouldn’t supposed that obey the landscape, and landscape – the architecture.Acropolis hill doesn’t dictate to the architecture, but Parthenon.