"Visiting Tuol Sleng—once a school where the Khmer Rouge interrogated and tortured people in the 1970s—is a haunting, educational experience: you’ll see rusty beds and torture devices juxtaposed against beautiful trees and a jasmine-scented garden, and I suggest visiting the museum before the Killing Fields to better understand the atrocities; joint admission (with Choeung Ek) costs $20 USD and includes a guided tour for an in-depth look." - Matthew Kepnes