Take a self-guided tour of two harrowing Cambodian sites, each a stark reminder of the atrocities committed during the Khmer Rouge regime from 1975 to 1979. First, visit the Tuol Sleng Genocide Museum, transformed from the notorious Security Prison 21 (S-21). Then get a sobering look at the Killing Fields, where mass killings and burials took place. Travel by coach round-trip from selected hotels in Phnom Penh, with recorded commentary and an informative video documentary on board. Audio tours are available for purchase at each location.