This project is a museum dedicated to the audio visual arts: Museo de Arte Audio Visual (MAAV). The museum has been designed to be 3m belowstreet level, and the walkway is at the same time the roof of the museum. The l ocation chosen for the museum is in a public space, between important embassies such as those of Italy, Spain and Chile. For this reason we chose to place the museum in an underground level, and not interrupt the public space and to make the roof part of the topography.