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Tuol Sleng Genocide Museum
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Tuol Sleng Genocide Museum

Phnom Penh, Cambodia
The Tuol Sleng Genocide Museum (S-21) is one of Cambodia’s most important historical sites, preserving the memory of victims from the Khmer Rouge era.

Originally a high school, the building was converted into a detention and interrogation center during the Khmer Rouge regime. Today, it stands as a museum dedicated to documenting the tragic history and honoring those who suffered.

Essential details

  • Location: Street 113, Phnom Penh
  • Opening hours: 8:00 AM – 5:00 PM
  • Entrance fee: Around 20,000 KHR

What to see

  • Former classrooms: Preserved as cells and interrogation rooms.
  • Photographic archives: Portraits of prisoners and victims.
  • Survivor testimonies: Stories from the few who lived through S-21.
  • Historical exhibits: Documents explaining the Khmer Rouge regime.

Best time to visit

  • Morning hours: A quieter atmosphere for reflection.

Travel tips

  • This is an emotional site — be respectful.
  • Audio guides available in many languages.
  • Combine with Choeung Ek Killing Fields for a complete historical understanding.