Tuol Sleng Genocide Museum
Security Prison 21 (S-21): Bearing witness to Cambodia's darkest chapter
Important: Sensitive Content
Tuol Sleng documents the torture and deaths of an estimated 17,000+ people during the Khmer Rouge regime (1975-1979). The museum contains graphic photographs, evidence of torture, and deeply disturbing content. This is an emotionally challenging visit. Please prepare accordingly.
1.5-2 Hours
Recommended Duration
$5 USD
Adult Admission
8 AM - 5 PM
Daily Hours
Audio Guide
Included in Entry
Overview
Tuol Sleng, meaning "Hill of the Poisonous Trees," was a high school before the Khmer Rouge converted it into Security Prison 21 (S-21) in 1975. It became the regime's primary interrogation center, where an estimated 17,000-20,000 people were imprisoned, tortured, and eventually executed at the nearby Killing Fields of Choeung Ek.
Today, the site serves as the Tuol Sleng Genocide Museum, preserving the buildings largely as they were found when Vietnamese forces discovered them in January 1979. The museum stands as a memorial to the victims and a reminder of the horrors of the Cambodian genocide, in which an estimated 1.5-2 million people died.
Historical Context
Who Were the Victims?
Initially, the Khmer Rouge targeted former government officials, military personnel, and educated professionals. As paranoia grew, the purges expanded to include Khmer Rouge cadres themselves, ethnic minorities, and anyone suspected of disloyalty. Detailed records and photographs were kept of each prisoner.
What to See
Building A: Torture Rooms
Former classrooms converted to interrogation chambers. Iron bed frames used for torture remain in place. Photographs on the walls show victims as they were discovered in 1979. This is the most difficult building to visit.
Building B: Prisoner Photographs
Walls lined with mugshots of prisoners—men, women, and children—taken upon arrival. The meticulous documentation by the Khmer Rouge now serves as evidence and memorial. Each face represents a life lost to senseless brutality.
Building C: Holding Cells
Classrooms divided into tiny brick cells where prisoners were shackled. Also contains displays of torture implements, prisoner clothing, and personal effects. The cramped cells show the inhumane conditions prisoners endured.
Building D: Exhibits & Survivor Stories
Contains paintings by survivor Vann Nath depicting life at S-21, as well as historical exhibits, information about the Khmer Rouge Tribunal, and a focus on survivor testimonies. Offers some context and hope after the earlier buildings.
Visiting Information
Hours & Admission
Hours: 8:00 AM - 5:00 PM daily
Last entry: 4:00 PM
Adults: $5 USD
Students: $3 USD (with ID)
Audio guide: Included in admission
Closed only on major Cambodian holidays
Getting There
Address: Street 113, Boeng Keng Kang
From riverside: 10-15 min by tuk-tuk ($2-3)
From Russian Market: 5 min walk
Most visitors combine with Choeung Ek (Killing Fields), 15km south
Preparing for Your Visit
Recommendations
- Use the audio guide—it provides essential context and survivor testimonies
- Visit in the morning when it's quieter and cooler
- Allow time for reflection afterward—don't rush to another activity
- Read about Khmer Rouge history beforehand for better context
- Dress respectfully—this is a memorial site
Important Notes
- Be prepared for graphic images and disturbing content
- Not recommended for young children
- Maintain respectful silence in the buildings
- Photography is allowed but be respectful—no selfies
After Your Visit
Many visitors find the experience emotionally overwhelming. It's completely normal to feel sad, angry, or drained afterward. Consider:
Processing the Experience
- • Take quiet time at a nearby café to reflect
- • Journal your thoughts and feelings
- • Discuss the experience with travel companions
- • Don't schedule intense activities immediately after
Continue Learning
- • Visit Choeung Ek (Killing Fields) to complete the story
- • Read "First They Killed My Father" by Loung Ung
- • Watch "The Missing Picture" documentary
- • Learn about ongoing reconciliation efforts
Related Sites
Frequently Asked Questions
Frequently Asked Questions
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