Begin your tour with a visit to the Royal Palace overlooking the confluence of the Mekong and Tonle Sap Rivers. Built in 1866 by King Norodom, the palace is now home to the reigning monarch. Within the palace grounds you will find the coronation hall, an open air theatre for the Royal Dance Troupe, and the King’s private residence. The grounds are open to the public except when the King is in residence. The grounds also house the Silver Pagoda, its floor covered by 5,000 silver tiles each weighing 1 kilogram. Next you will visit the Tuol Sleng Genocide Museum, which documents the atrocities of the Khmer Rouge against both their political enemies and many thousands of everyday Cambodians. In 1975 this former high school was taken over by Pol Pot's security forces and converted into Security Prison 21 (S-21). It soon became the largest detention and torture centre in the country. Please note that the images on display are quite graphic and unsettling. Then drive to Choeung Ek - the Killing Fields, where the brutal executions of more than 17,000 men, women and children took place. The large mass grave pits have all but gone, however the stupa filled with skulls is a chilling memorial.