Leake Street, also known as the Banksy Tunnel, is a road tunnel in Lambeth where graffiti is legal and encouraged, even though it goes against UK public property laws. The street, about 300 meters long, runs under Waterloo Station and is adorned with colourful graffiti art. Initially created during the Cans Festival organised by Banksy in 2008, the tunnel has become a popular spot for street artists to showcase their work.