The biggest draw for tourists into Cambodia is the world-famous UNESCO World Heritage Site of Angkor Wat, which means “Temple that is a City“. Considered as the largest religious building in the world in a complex that covers 97 sq. kms., Angkor Wat represents Mount Meru of Hindu mythology as the home of the gods and the kings. Built in the 12th century, this temple is the pinnacle of Khmer architecture with its highest tower at 669 feet. Virtually abandoned for 600 years, until French naturalist Henri Mouhot stumbled into it in 1861. Angkor Wat is dedicated to Vishnu and the only monument that is a mausoleum (others are temples or monasteries).