It was once a high school, but when the Khmer Rouge took power in Cambodia, it became the infamous S-21 prison. This metal frame bed and the blanket on top are all that remain in this room used between 1975 and 1979 to interrogate, torture, and kill. It is thought that 17000 people came through this prison, though the number could be as high as 20000. There are only 12 known survivors.
The S-21 prison has been turned into the Tuol Sleng Genocide Museum in Phnom Penh, Cambodia.
Today, more than 30 years later, the first of five surviving senior officials of the Khmer Rouge was convicted by a UN-Backed Cambodian war crimes tribunal. S-21 prison chief 'Duch' (now 67 years old) was sentenced to 35 years in prison, though will likely serve much less.