Dark Tourism Site
5/5
Tuol Sleng Genocide Museum (S-21)
Tuol Sleng Genocide Museum, formerly known as Security Prison 21 (S-21), is one of the most sobering dark-tourism and memorial sites in the world. Originally a quiet high school, it was converted by the Khmer Rouge regime in 1975 into a secret interrogation and torture facility where an estimated 18,000 to 20,000 prisoners were brutalized before being sent to execution sites. Today, visitors and museum staff report powerful spiritual presence, cold drafts, and phantom cries throughout the former cell blocks.