There is a lot of literature about architecture and its relation with the city, however, there are few people who understand architecture like an instrument for constructing a city, and almost nobody understands the architecture’s paradoxical mixture of power and inability. So, the construction of a city appears like a complex relation among different factors, whose actions generate a metastasis in the urban frame. To know the way of these factors performance, and the organization of the State-policies, allow us to find elements to operate on its design, following effects that give advantages to the city and society in general.