The history of the main square of Mexico is again revised, but this time from the approach of multiple disciplines that fix the gaze with their professional methods, to manifest the difference between the old indigenous metropolis and the colonial city of Nueva España. These looks belong to the most outstanding scholars of Mexican antiquity who, with a lifetime of research, provide the best version of a focus of culture that was born with the foundation of México-Tenochtitlan and that lasts to this day. This main square concentrates not only the summary of the history of the nation, but the key to the idiosyncrasies of the entire American continent, which deepened with its multiple peoples a vision of the world that has been and continues to be unique. Navel and primitive cave, staged of history, where it is possible to observe the mythical astonishment of the foundation of the city, the bloody war between two different worlds, the viceroy's six-horse chariot between the populous guilds of artisans, the various orders of the Catholic Church and the Novohispanic castes that made the amalgam of the Mexican nation.