The history of architecture and the city is a reflection of the coexistence, and the constant influences and interferences of art in architecture. This research is situated in the period between 1960 and 1975, and analyses visionary utopian projects that proposed new mechanisms and strategies in their approach to the model of the city. These projects represent the public space, attempting to develop new ways of thinking and designing a model that avoids the rigidity of “ideal” models from the architecture of the Modern Movement. The thesis analyses the communion of art with architecture, focusing on the years of the development of Conceptual Art (1966-1972), while also taking into account the influences of Pop, Minimalism and Actionism, and its beginnings in the British sphere of Pop Architecture, Megastructure, the Austrian Phenomenon and ending with Italian Radical Architecture. The architects of the period, immersed in a moment of cultural change, incorporate and use “the exhibition” as a mechanism for communication, for showing the “spirit of the times” and transmitting ideas that acquire a prominence independent of construction itself. The material nature of their proposals can be seen in the many representations that express their criticism and ideas and which, appropriating the languages of art, became Conceptual Architecture.