Cambodia is a kingdom located in the southern part of the Indochinese Peninsula in Southeast Asia. Many of the majestic ruins built during the Khmer Dynasty, such as Angkor Wat and Angkor Thom, are registered as World Heritage sites. The dense forests and rice fields surrounding the ruins are also a highlight. In Phnom Penh, the capital city facing the Mekong River, the longest river in Southeast Asia, you can visit the beautifully decorated Royal Palace and Buddhist temples such as the Silver Pagoda and Wat Phnom.