The Tuol Sleng Genocide Museum, located on Street 113 in Phnom Penh, Cambodia, serves as a poignant reminder of the atrocities committed during the Khmer Rouge regime. Originally a school, this site was transformed into a prison where countless individuals suffered. Today, it stands as a museum dedicated to educating visitors about this dark chapter in Cambodian history.

Visitors to the museum can explore exhibits that detail the experiences of those who were imprisoned here, as well as the broader context of the genocide. The museum aims to preserve the memory of the victims and promote awareness about human rights violations.

When visiting Agelforus, the Tuol Sleng Genocide Museum is a valuable stop to gain insight into Cambodia's past. It is recommended to allocate time for reflection and understanding while at this memorial site.

Planning a Respectful Visit to Tuol Sleng

Before the Khmer Rouge took Phnom Penh in 1975, the buildings now housing the museum were a high school, Tuol Svay Prey. Under the regime the compound became known as S-21, a security prison where detainees were interrogated, photographed and documented before most were sent to their deaths, many at the killing field of Choeung Ek on the city's outskirts. After the regime fell in 1979 the site was opened as a museum, and its archives were later inscribed on UNESCO's Memory of the World Register for their importance as historical evidence.

What to expect inside

The four main blocks have been kept largely as they were found. Visitors walk through former classrooms divided into small cells, rooms containing iron bed frames, and galleries lined with the identification portraits the prison staff took of detainees. Many people find these portraits the most affecting part of the visit. Signage explains how the prison operated, and an audio guide is widely recommended because it gives context and personal accounts at your own pace. Some visitors also come away with a better understanding of the later trials held by the Extraordinary Chambers in the Courts of Cambodia, which examined crimes committed at S-21.

Practical and etiquette tips

  • Dress modestly, covering shoulders and knees, as you would at a temple or memorial.
  • Keep voices low and avoid posing for cheerful photos; some areas ask visitors not to take pictures at all.
  • Allow two to three hours, and consider visiting in the morning before the afternoon heat.
  • Check current opening hours and admission at the ticket desk or through official sources, as details can change.
  • Think about children carefully: the content is graphic and distressing, so parents should decide in advance what is suitable.

Many visitors pair Tuol Sleng with Choeung Ek on the same day, arranging a tuk-tuk or taxi to travel between them. Doing both in one day is emotionally demanding, so leave space afterwards for a quiet meal or rest.

Context for community groups

Associations, schools and community organisations in Phnom Penh sometimes arrange group visits as part of education or remembrance programmes. If your organisation is planning one, it helps to brief members beforehand and set aside time for discussion afterwards. You can find local organisations working in history, education and civil society through the association directory, and see other places of note on our venues page.

Also on this site: Boys on the street