THE HAGUE, NETHERLANDS: Some 2,000 Amsterdam residents posed in the nude on June 3rd for US photographer Spencer Tunick, known for his photos of naked subjects, a news agency said.

Those who participated volunteered for the photo session and met in the middle of the night, ANP agency said.

The photos include women on bicycles or men at a service station, as well as models posing at one of the city's famous bridges in Amsterdam's historic centre.

"With that, he experimented with skin colour," Dream Amsterdam cultural events organiser told ANP. "In one of the photos, people are lined up from the lightest skin to the darkest skin."

Tunick's photos will be exhibited in Amsterdam's centre, in human size, from June 23 until the end of August.

Tunick has carried out similar photo sessions in Belgium, France, Australia, Britain, Canada and the United States.

In 1994 he was arrested in Manhattan after a nude model posed for him in broad daylight.