As part of the project for the redevelopment of the outside spaces of the complex of the former Mercati Generali, the idea of the exhibition concerns a “double reading” at different levels. The exhibition, under the Charter of the Cultural Heritage of the Urban Project Ostiense-Marconi, the history of markets, surveys of the complexs, methods and scenarios of reuse. On the one hand, the large size of the area helps the quite distance reading, the total surface of the seven exhibition will be covered by photographs and visible from the outside. on the other. The close reading offers a rundown of archival documents, drawings and photographs that constitute the heart of the exhibit.