More than 5,000 people have shed their clothing on the steps of the Sydney Opera House to pose for a photograph by the American artist Spencer Tunick.
The organisers had only expected about half that number to take part.
The installation had been commissioned by the Sydney Gay and Lesbian Mardi Gras, which took place over the weekend.
For once the eye was diverted away from the magnificent white sails of the Sydney Opera House.
Tweet