Explore ancient Hindu temple built during the period of the Khmer Empire, that is situated atop a 525-meter cliff in the Dângrêk Mountains, in the Preah Vihear province and in 928 Koh Ker instead of Angkor became the capital of the Khmer empire, during the reign of King Jayavarman IV and his son. The landmark of Koh Ker is the perfect step pyramid belonging to the vast complex of King Jayavarman's state temple Prasat Thom. Departure from Siem Reap and end in Siem Reap.