Milton Keynes has an unusual road system that disrupts the traffic typical of conventional road networks. Milton Keynes also has a number of unique attractions, such as the Snozone indoor snow slope, the scenic Grand Union Canal, and the futuristic architecture of the famous Xscape building. Bletchley Park, now a museum, is where the German Enigma codes were cracked during World War II. Art lovers can admire the public artworks scattered throughout the city and the contemporary Milton Keynes Gallery.