U.S. artist Spencer Tunick photographs naked volunteers in Sydney
U.S. artist Spencer Tunick photographs naked volunteers as they pose for him in front of the Sydney Opera House March 1, 2010. Organisers estimate 5,200 people posed for the early morning nude photo installation titled "Mardi Gras: The Base". REUTERS/Tim Wimborne (AUSTRALIA - Tags: SOCIETY) BEST QUALITY AVAILABLE