The Tuol Sleng Genocide Museum is a museum chronicling the Cambodian genocide. The site is a former high school which was used as the notorious Security Prison 21 (S-21) by the Khmer Rouge regime from its rise to power in 1975 to its fall in 1979. Soon became the largest centre of detention and torture in the country. Between 1975 and 1978 more than 17,000 people held at S-21 were taken to the killing fields of Choeung Ek.
Like the Nazis, the Khmer Rouge leaders were meticulous in keeping records of their barbarism. Upon arrival at the prison, prisoners were photographed and required to give detailed autobiographies, beginning with their childhood and ending with their arrest. After that, they were forced to strip to their underwear, and their possessions were confiscated. The prisoners were then taken to their cells. Those taken to the smaller cells were shackled to the walls or the concrete floor. Those who were held in the large mass cells were collectively shackled to long pieces of iron bar. The shackles were fixed to alternating bars; the prisoners slept with their heads in opposite directions. They slept on the floor without mats, mosquito nets, or blankets. They were forbidden to talk to each other.
Most prisoners at S-21 were held there for two to three months. However, several high-ranking Khmer Rouge cadres were held longer. Within two or three days after they were brought to S-21, all prisoners were taken for interrogation. The torture system at Tuol Sleng was designed to make prisoners confess to whatever crimes they were charged with by their captors. Prisoners were routinely beaten and tortured with electric shocks, searing hot metal instruments and hanging, some prisoners were cut with knives or suffocated with plastic bags. Other methods for generating confessions included pulling out fingernails while pouring alcohol on the wounds or they use use the waterboarding. Although many prisoners died from this kind of abuse, killing them outright was discouraged, since the Khmer Rouge needed their confessions. The "Medical Unit" at Tuol Sleng, however, did kill at least 100 prisoners by bleeding them to death.
Medical experiments were performed on certain prisoners. Inmates were sliced open and had organs removed with no anaesthetic. Others were attached to intravenous pumps and every drop of blood was drained from their bodies to see how long they could survive. The most difficult prisoners were skinned alive.
For the first year of S-21’s existence, corpses were buried near the prison. However, by the end of 1976, cadres ran out of burial spaces, the prisoner and their family were taken to the Choeung Ek extermination centre, fifteen kilometers from Phnom Penh. There, they were killed by being battered with iron bars, pickaxes, machetes and many other makeshift weapons owing to the scarcity, and subsequent price of ammunition. After the prisoners were executed, the soldiers who had accompanied them from S-21 buried them in graves that held as few as 6 and as many as 100 bodies.
As the Khmer Rouge ‘revolution’ reached ever greater heights of insanity, it began devouring its own. Generations of torturers and executioners who worked here were in turn killed by those who took their places. During early 1977, when the party purges of Eastern Zone cadres were getting underway, S-21 claimed an average of 100 victims a day.
When the Vietnamese army liberated Phnom Penh in early 1979, there were only seven prisoners alive at S-21, all of whom had used their skills, such as painting or photography, to stay alive. Fourteen others had been tortured to death as Vietnamese forces were closing in on the city. Photographs of their gruesome deaths are on display in the rooms where their decomposing corpses were found. Their graves are nearby in the courtyard.
