This contribution explores the collective experience of building up the Atlas of Paris Landscapes, exploring this city as a landscape, produced by nature and man-made actions, culturally perceived in the intersection of everyday practices of the metropolitan dwellers, and as a fundamental tópos of collective planetary imagination. The semantic exploration reflects a hybrid interpretation of four landscape dimensions: the cultural perception, the systemic landscape, the built, material landscape, and its aesthetics. The Atlas, by acting as a medium of discourse, congregates positions, criticism, a vast collected knowledge, bringing to the foreground the evolution of Paris' landscapes inside the radical nature of the change underway. As a medium, it opens rare possibilities of expression.