The Tuol Sleng Genocide Museum is one of the most important historical sites in Cambodia and the world. In the past, this was a high school named Tuol Svay Prey, but when the Communist Party of Kampuchea (Khmer Rouge) seized power in 1975 (B.E. 2518), the school was converted into a highly secretive prison and interrogation center code-named Security Prison 21, or better known as S-21.

This place is a symbol of the brutality and torture of the Khmer Rouge regime. The school buildings were surrounded by barbed wire, classrooms were divided into small individual cells and interrogation rooms, all under strict security. It is estimated that over 15,000 to 20,000 people were detained and tortured here, most of whom ended up being killed at the Choeung Ek Killing Fields. Only a handful of people survived S-21, serving as vital witnesses to the crimes committed.

A visit to Tuol Sleng is an emotionally heavy experience. The museum preserves the condition of the cells and much of the torture equipment. Large photographs of almost all the victims, documented before their execution, are displayed, serving as powerful and deeply moving evidence. For those interested in political history, governance, and human tragedy, this site is indispensable for learning.

As a place connected with death and torture, the museum’s atmosphere is calm, quiet, and solemn throughout the year. Visitors should prepare themselves for information that may evoke strong emotions. An audio guide service is also available, providing in-depth information and narratives from survivors, which enhances the learning experience.

Tuol Sleng is not only a place for historians but also a site that encourages artists and creators to reflect on the dark side of human history, and it serves as a reminder for couples and the general public of the value of peace and coexistence. Seeing the remnants of terror inscribed on the walls reinforces the importance of respecting human rights.

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How to Get There

• Tuk-Tuk: The most convenient and popular way to travel in Phnom Penh. You can hire a Tuk-Tuk from your hotel or any point in the city to go directly to the museum.

• Taxi/Private Car: Use a taxi service or ride-hailing applications (such as Grab or PassApp) for greater speed and comfort.

• Motodop (Motorcycle Taxi): An economical option for solo travel over short distances.

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Travel Tips

• Recommended Season (November - February): This is the dry season with the coolest weather. Avoid the extremely hot months of April to June and the rainy season (June - October), which can see heavy rainfall.

• Attire: You should dress politely (covering shoulders and knees) out of respect for the location and the deceased, as it is a place with strong historical and emotional significance.

• Photography: Photography is permitted in most areas, but caution should be exercised and respect should be shown for the feelings of others, especially in areas displaying victims' photos.

• Food and Culture: There are many local restaurants and cafes around the museum, but you should dedicate ample time to exploring and reflecting on the museum’s stories first.

• Planning: You should allow at least 1.5 – 2 hours for the visit, and consider visiting the Choeung Ek Killing Fields on the same day to gain a complete perspective on the tragedy.

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Admission Fee:

• Cambodian Visitors: Free admission.

• Foreign Visitors: Admission Ticket: 5 USD (Audio guide not included) / Admission Ticket with Audio Guide: 10 USD

• Information updated 2024 by tourist sources

Opening Hours:

• Open Daily: 08:00 AM to 05:00 PM.