A “Magic Cube “ with dimensions 15×15 meters hangs into the open space and bridges towards it lead the way for the kids inside, where can be found a theatrical “camera obscura”’. Occasionally the walls of the cube” disappear. At that point one can seat on the access ramp spiraling around the cube. . Thus sheltered by a slanting facade much like in a tube-telescope, the spectator also becomes an unwitting participant.