Angkor is a name conventionally applied to the region of Cambodia serving as the seat of the Khmer empire that flourished from approximately the 9th century to the 15th century A.D.

The ruins of Angkor are located amid forests and farmland to the north of the Great Lake (Tonle Sap) and south of the Kulen Hills, near modern day Siem Reap, and are a UNESCO World Heritage Site. The temples of the Angkor area number over one thousand, ranging in scale from nondescript piles of brick rubble scattered through rice fields to the magnificent Angkor Wat, said to be the world's largest single religious monument. Many of the temples at Angkor have been restored, and together they comprise the most significant site of Khmer architecture.