Tuol Sleng Genocide Museum

The Tuol Sleng Genocide Museum is a museum in Phnom Penh, the capital of Cambodia. 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. Tuol Sleng (Khmer [tuəl slaeŋ]) means "Hill of the Poisonous Trees" or "Strychnine Hill".

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