The Koh Ker temple complex is the remains of the ancient capital of the Khmer Empire. As history tells, at the end of the 9th century the capital of the empire was moved to the area of Angkor, where it remained for almost 500 years until the fall of the empire. However, at the beginning of the 10th century, the capital was nevertheless moved from there for a short period of time. In 928, King Jayavarman IV, who may have usurped the throne, created an impressive new capital just 100 km from Angkor. The temples here were shrines of Brahmanism.
The most important temple of the complex is Prasat Tom. This is an impressive seven-level pyramid temple. There are also some well-preserved small temples here. In some places there are even lingas (male symbols) left. For example, in the temples of Prasat Balang and Prasat Tneng.