Wright’s urban vision was concretized in the mid-thirties in his controversial project for Broadacre, a model city that stressed individual land ownership and the one-family house. In 1935 he built a large maquettefor a nationwide touring exhibition, but was able to put only a part of these ideas in practice in several small residential cooperatives such as Usonia I and Cloverleaf. Simultaneously with this horizontally stretched city, Wright culminated his conception of the high-rise building with the Utopian *mile high ’ skyscraper, based on the analogy to the structure o f a tree that he had already realized in the Johnson and Price towers… [+]