This publication edited by Juan José Kochen and the ICA Foundation in 2019 - on the occasion of the 50th anniversary of the Collective Transport System - brings together a series of texts written by Bernardo Quintana Isaac (president of Fundación ICA. Ingenieros Civiles Asociados), Manuel Larrosa, Enrique X. de Anda, Juan Villoro and Carlos Monsiváis, among other experts who, accompanied by a series of plans and historical charts, make up an extensive chronicle of all the events brought about by the Metro Collective Transportation System. The book shows an abstraction of the map of the different lines and the pages are interspersed between texts, plans, photographs, covers, journalistic notes, headings, drawings, illustrations and watercolors that make up an archeology of modernity that was erected to form one of the foundations of the city that millions of people currently inhabit.