Contemporary landscapes evoke, now more than ever, images of urban environments made up of streets and corners, walls and gardens, monuments and shops. A wide range of things urban areas set the stage for the metropolitan life from central public spaces to peri-urban enclaus, passing through invisible nodes and networks, non-places and landscapes in transformation. Faced with this growing complexity of the urban fact, what instruments do we have architects to measure, understand, plan and build the city and the territory?