Moving from one site to another every day, a giant red ball sets out on a week long journey throughout the city of Roppongi. Realized in 32 cities around the world, “RedBall Project” is a traveling public art by an American artist, Kurt Perschke. Defying immobility and permanence of common public artworks, the ball’s constant movement playfully redraws the map of Roppongi. The project humorously opens up our perception of urban space and revitalizes our relationship with everyday surroundings.