Visiting Toul Sleng (S-21) and The Cheung Ek Killing Fields makes for an emotionally charged day filled with eye-opening experiences about Cambodian history and the Khmer Rouge. There are many sites considered to be “Killing Fields” all across Cambodia, however, just on the outskirts of Phnom Penh lies Cheung Ek, one of the a largest sites and remains protected and available for visitors.
