World's largest 3D painting creates nifty optical illusion

Actors pose with gym equipment on what the Guinness World Records bills as the world's largest 3D painting, at Canary Wharf in London November this week. British artist Joe Hill's creation measures in excess of 1120 square meters, or 12,000 square feet. Guinness says it breaks records for the longest and largest surface area 3D painting. (REUTERS/Paul Hackett)