The main objective of the book is to explore Tlatelolco's conception as a housing unit and its operation in subsequent years. The book is a collection of various perspectives that explore the different facets of a historical place, recalling its pre-Hispanic past, its construction as a modern housing unit representing the urbanization and well-being that Mexico lived in the 1950's and part of the 1960's, while also highlighting its most tragic events such as the massacre of students (1968) or its partial collapse (1985) due to an earthquake. The edition incorporates an article by architect Mario Pani, in which he explains the distribution of the buildings, the conception of the city in the 1950's, along with the original pictures of the project, which not only show how it was conceived, but how it was finished.