After breakfast, visit Una Loam Pagoda one of the oldest pagodas built during Phnom Penh time. Royal Palace, it is a good example of Khmer architecture featuring its layout of the defensive wall (kampaeng), throne hall (Preah Tineang), Temple of the Emerald Buddha (Wat Preah Keo Morakot), stupas (Chedei), towering spires (prang Prasat) and mural paintings.
Afternoon, free shopping at Russian Market, and then Killing Field ( Chheung Ek ). The memorial park at Choeung Ek has been built around the mass graves of many thousands of victims, most of who were executed after they had been transported from the S-21 Prison in Phnom Penh. Many dozens of mass graves are visible above ground, many which have not been excavated as of yet. 1-hour boat cruise along Mekong River. Overnight.