Phimai Historical Park is the largest Khmer sanctuary in Thailand located in the middle of Phimai about 60 kilometers from Nakhon Ratchasima (Khorat). It was presumably constructed to be a Mahayana Buddhist religious site during the 16th – 17th Buddhist century in the reign of Khmer's King Suryavarman I in Ba Phuon style similar to Phanom Wan Sanctuary and Phanom Rung Sanctuary. However, this sanctuary differs from the two sites in which it is situated toward the south, assumed to be facing Mueang Phra Nakhon, the center of the ancient Khmer Kingdom (currently Cambodia). Khmer settlements were generally away from rivers as they had their own reserving ponds called Barai. In spite of that, Phimai is located on the bank of Moon River due to the presumption of prior settlement from Dvarvati artifacts.The outstanding structural characteristic is the main Prang or pagoda which is Thailand's grandest pagoda in stone sanctuaries with 28 meters high. It is made entirely of white sandstone, which is rare sandstone found only in important places, and is different from the porches (Gopura) and walls that are made primarily of red sandstone.
A major annual festival at Phimai Historical Park
Other tourist attractions in Phimai