Pictures: Tuol Sleng Prison and Choeung Ek (The Killing Fields)

Graves at Cheoung Ek (The Killing Fields)

Skulls recovered from the graves in the Killing Fields

Tuol Sleng Prison - formerly a local high school. 200,000 people were imprisoned and either died here or were taken to the Killing Fields to be slaughtered.

A prison cell at Tuol Sleng for a "more important" prisoner. A picture of the dead body the Vietnamese soldiers found in this room is hanging on the wall.

Memorial at the Killing Fields. It houses the skulls and clothing of the recovered bodies of the dead.