Temple stonework in Cambodia
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Khmer Rouge memorial sites and history museums

The sites that record the Khmer Rouge years. Difficult, essential, and best visited with someone who can explain what you are looking at.

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In short

The sites that record the Khmer Rouge years. Difficult, essential, and best visited with someone who can explain what you are looking at.

Checked

September 2026

Phnom Penh

Tuol Sleng Genocide Museum (S-21)

Tuol Sleng was a secondary school in Phnom Penh that the Khmer Rouge converted into Security Prison 21, where thousands were detained and interrogated between 1975…

Where
Boeung Keng Kang, central Phnom Penh
Time needed
Two hours, and you will want the audio guide
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Memorial site

Choeung Ek Killing Fields

Choeung Ek, about 15 km south of Phnom Penh, is the best known of the sites where prisoners from S-21 were executed and buried in mass…

Where
About 15 km south of Phnom Penh, 30 to 40 minutes by road
Time needed
90 minutes to two hours
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Siem Reap

Wat Thmey memorial, Siem Reap

Wat Thmey is a working pagoda on the edge of Siem Reap with a memorial stupa holding the remains of victims of the Khmer Rouge period.…

Where
North of central Siem Reap, on the road towards the temples
Time needed
20 to 30 minutes
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