The temples of Angkor are some of the two greatest ancient temples within Southeast Asia

The temples of Angkor are some of the two greatest ancient temples within Southeast Asia, the other being Myanmar’s Bagan Temple complex. The complex encompasses the remains of several Khmer capitals spanning the 9th to 15th centuries. Constructed between 802 AD and 1220 AD, Angkor Thom and the surrounding Angkor temples represent one of the most magnificent prevailing architectural masterpieces known to man. The region is believed to have been chosen for its beneficial agricultural and military position. Interestingly, the primary temples were discovered to have emulated the Draco constellations existing in 10,500 BC during the spring equinox.
Zhou Daguan the Chinese emissary, who provided the only first-hand account o f the Khmer, described the splendor of Angkor Thom. Cambodia attractions

At the center of the Kingdom rises a Golden tower Bayon flanked by more than twenty lesser towers and several hundred stone chambers. On the eastern side is a golden bridge guarded by two lions of gold, one on each side, with eight golden Buddhas spaced along the stone chambers. North of the Golden Tower of Bronze [Baphuon], higher even than the Golden tower. a truly astonishing spectacle. With more than ten chambers at its base. A quarter of a mile further north is the residence of the King rising above his private apartments is another tower of gold, These are the monuments which have caused merchants from overseas to speak so often of "Cambodia the rich and noble "