Ora-Ito director of the MaMo, Marseille Modulor, located on the rooftop terrace of the Cité Radieuse in Marseille gave carte blanche to Daniel Buren to invest this space. This film shows us how through seven monumental works, Daniel Buren seizes the masterpiece of Le Corbusier and questions this place. Ora-Ito comments on the artist's intervention within this particular space.