S-21 (Tuol Sleng Genocide Museum)

S-21, also known as Tuol Sleng Genocide Museum, was a high school transformed into a brutal prison during Cambodia's Khmer Rouge regime (1975-1979). It was used to detain, torture, and execute perceived enemies of the regime. Thousands, including professionals and intellectuals, were imprisoned there. Today, it serves as a memorial and museum, preserving the site’s harrowing history to educate visitors about the horrors of tyranny and the importance of human rights. The site stands as a powerful reminder of Cambodia’s tragic past and the need for vigilance against atrocities.