Germain Marsan has designed a structure, made up of nineteen aluminum plates, that can be disassembled. Unlike perpetual, mystical works of art, this one can take on multiple forms. It lives in the street, in parks... everywhere. The public becomes the artist: creating, demolishing, re-creating. Jean-Guy Michaud enriches this piece through the use of video. His camera observes the creation of unsuspected forms and thus records the appropriation by passers-by of a language of expression traditionally reserved for specialists.