The disorderly growth of large urban centers in the country and the discussion about the development and existence of cultural spaces. Based on the example of the Teatro de Ópera in Campinas, a building that managed to consolidate construction and space for the existence of a square, theater and architecture are discussed, pointing out the future coexistence between men and cities. Using models, the film presents a new urban concept of the square, as a point of bringing people together for an encounter with cultural things, combining gardens, concert halls, compilation rooms and libraries. A theatrical rehearsal, held in an unfinished theater in Campinas / SP, designed by the architect Fábio Penteado.