In an excursus of images, the book illustrates one of the most articulated regions of Italy; varied from the point of view of geography and of cultural history, with people who differ in language and provenience. Rome, forever capital, is extolled in these pictures, whose antiquity and historical authenticity make them unprecedented. All the provinces of Lazio are represented in their specific character and historical aspect, proposing a world that, in little more than a century, has changed at an ever increasing rate. The photographic collection gives a vivid idea of the many stages that have gradually changed the face of the region in a span of five generations, teaching us not to forget what we once were.