Old Prison with sad history

#wecreate Must see in Phnom Penh, museum made out of S-21, one of the prisons during the rule of Khmer Rouge in 1975-1979. Admission is 5 USD per person or 10 USD with audio guide I think I spend roughly two hours listening to most of the stuff and going on a leisurely pace. You could probably spend 1-2 hours more reading everything on the additional exhibitions and listening everything on the audio guide.