Tuol Sleng and Choeung Ek: A Visitor's Guide
Tuol Sleng and Choeung Ek: what happened, and what a visit costs
Between 17 April 1975 and early January 1979, the Khmer Rouge, under Pol Pot, ruled Cambodia and killed an estimated 1.7 to 2.2 million people, roughly a quarter of the population, through execution, starvation, forced labor, and disease. The exact toll is debated; the scale is not. Tuol Sleng (S-21) in Phnom Penh and Choeung Ek just outside the city are the two places most visitors go to understand, concretely, what happened.
Whether to visit sites of mass atrocity is a real question. The answer here, as at Auschwitz or the Rwandan genocide memorials, is yes: these physical places demand a kind of attention that reading about the events in the abstract doesn’t.
Tuol Sleng Genocide Museum (S-21)
Tuol Sleng was a secondary school before the Khmer Rouge converted it in 1975 into their central secret prison and interrogation center. An estimated 14,000 to 20,000 people were held here; only around 12 are known to have survived, among them the painters Vann Nath and Bou Meng.
The Khmer Rouge photographed their prisoners meticulously, and rooms of those photographs face visitors near the entrance. The classrooms turned into cells, barely large enough to turn around in, and the interrogation rooms with their iron bed frames, are still intact.
Admission is $5 for adults ($3 for youth), and the audio guide, about $5 more, carries survivor testimony and is worth adding. Allow at least two to three hours. Current hours and details are at the official site, tuolsleng.gov.kh.
Choeung Ek
Choeung Ek sits about 15km south of Phnom Penh, roughly 30-45 minutes by tuk-tuk. It was an orchard before 1975; the Khmer Rouge used it as an execution site for prisoners trucked in from S-21.
The memorial stupa holds more than 5,000 skulls, visible through glass panels. Of the site’s 129 mass graves, many remain unexcavated out of respect; bone and cloth fragments still surface after heavy rain, and staff collect them. The audio guide, included in the $6 admission, uses recorded testimony near specific locations along the path. Allow about 90 minutes for the full route.
Visiting both
Most visitors see Tuol Sleng and Choeung Ek in a single day, Tuol Sleng first, then Choeung Ek, the order the history happened in. Some find Tuol Sleng harder because individual faces are unavoidable; others find Choeung Ek harder because the scale becomes physically present in the ground itself. A break for lunch between the two is reasonable, and for most visitors, necessary.
Phnom Penh beyond the memorials
The city’s other essentials sit within a short tuk-tuk ride: the Royal Palace and Silver Pagoda on the riverfront (about $10, a strict dress code applies), and the National Museum, which holds the region’s most important collection of Khmer sculpture. Friends, a social enterprise on Street 13 that trains at-risk youth in hospitality, is a good, unhurried place for a meal afterward. Getting around the city is by tuk-tuk or the PassApp/Grab apps.
Read more: the main Phnom Penh guide covers the rest of the city, and the Phnom Penh budget guide breaks down costs across a full trip.