Here's a look at what is now known as the Tuol Sleng Genocide Museum. During the rule of the Khmer Rouge, it was known as Security Prison 21 or S-21 for short. The building and grounds were originally a high school, but it was turned into one of the most infamous torture and detainment centers in 1975 when Pol Pot and his "Orgnazation" came to rule.
It is estimated around 20,000 people lost their lives here. When the prison was liberated by the Vietnamese in 1979, only three living souls were found on the grounds. Luckily, we have their personal testimonies to bear witness to the atrocities committed here.
When prisoners arrived at S-21, they were interviewed and photographed. Interrogations would continue with varied means of torture until the person confessed to whatever crime they were accused of. The accused's family would also be detained and often tortured as well. In the end, despite having confessed, these detainees and their families were murdered. Detailed records were kept on each inmate, most of which were still intact at the time of liberation - the photos and some of the written statements are on view at the museum. Photos taken in December 2016.