Koh Ker was once an ancient capital of Cambodia, located in Srayong Cheung village, Srayong commune, Kulen district, about 49 kilometers west of the provincial town. The Koh Ker complex is on the Chhork Koki highland. It was built by King Jayavaraman IV (AD 928-942). Koh Ker temple is 35 meters high, and its design resembles a seven-stepped stupa. The temple faces west toward Angkor city. It was built to worship Treypuvanesvara, the god of happiness.

So far, 96 temples have been found in Koh Ker: Dav, Rumlum Bey, Beung Veng, Trapiang Prey, Dey Chhnang, Srok Srolao, Lingam, Kuk Srakum, Trapiang Ta, Sophy, Krahom, Andoung, Ang Khna, Teuk Krahom, Damrei Sar, Krarab, Banteay Pichoan, Kuk, Kmao, Thneung, Thorn Balang, Rohal, Chamneh, Sampich, Trapiang Svay, Neang Kmao, Pram, Bat, Khnar Chen, Klum, Chrab, Dangtung, Prang, Kampiang.... These temples were not constructed near each other. Today, many of them are no longer standing, and some are buried in the ground