Preah Khan was built in the 12th century. With almost 100,000 officials and servants, it was the center of a substantial organization.
Views of Ha Long Bay aboard the Syrena.
Hue Imperial Palace, Vietnam
Angkor Wat is the world's largest religious monument.
Originally a monastery and university, Ta Prohm has been left in much the same condition in which it was found. The photogenic and atmospheric combination of trees growing out of the ruins and the jungle surroundings have made it one of Angkor's most visited temples.