Ciudad de México represents a privileged context for understanding the current structure of the development models of Latin American society, situated between historical heritage and current challenges. In this volume, the lectures of experts in various fields enable the three subsequent paths of study: on the regulatory criteria that govern city administration; on its development in comparison with current sustainability parameters; on the paradigmatic characters of a neighbourhood like Santa Fe. The collection of these analyses, made by Sinderesi School, intends to shed light on the many elements at stake. They particularly aim at describing the attempts of a "Latin American way" to configure a modern city, "on human scale", in this era of great changes that invite us to consider a different model of social organization and development. As Pope Francis said at the end of his Apostolic Visit in 2016: "many men and women, with their everyday efforts, make it possible for this Mexican society not to be left in darkness".