At the junction of the mighty Mekong and Tonle Sap rivers lies Cambodia's vibrant capital, Phnom Penh, a beautiful city of regional charm and tranquility that was the center of both the Khmer Empire and French colonists, and thousands of tourists visit annually to enjoy a mix of Asian oddities from French colonial mansions to Tree-lined streets amid grand Angkorian architecture, the Royal Palace, Silver Temple, National Museum, Tuol Sleng Genocide Museum and Cheong Ek Killing Fields, along with many markets selling sculptures, paintings, silk, silver and precious stones.