Archaeological site in northwestern Cambodia which was the capital of the Khmer empire in Kampuchia and founded in c 9 AD (c 802). The name, from Sanskrit 'nagara', means "royal city, the capital". As the capital of the Khmer empire form the 9th-15th centuries its most imposing monuments are Angkor Wat a temple complex built in the 12th century by King Suryavarman II (reigned 1113-c. 1150 AD) and Angkor Thom a temple complex built about 1200 by King Jayavarman VII (1181-c 1215 AD). These monuments were lost in jungle and rediscovered in the last century. In total there are more than 250 monuments built almost exclusively in sandstone. The Thais conquered Angkor in 1431 and it was abandoned.