International audienceThis chapter aims at discussing the epistemological added value of knowledge when produced in/by the city. It does it in relation with a period where the urban question is part of the economic, cultural as well as political European debate, and when urbanization becomes a major global process. It elaborates on one case, Rome, and investigates the articulations between multi-scalar hubs, variegated social groups, and distinct sites: it aims at showing that such articulation constitutes a specific “dispositif” which shape the epistemological foundations of urban knowledge. In the case of Rome, as the result such urban epistemology is characterized by a relationship to time nourished by an ability to encompass all parts o...