Preah Vihear is vast, remote and hardly touched by tourism, many areas were under Khmer Rouge control until 1998. It's home to three of Cambodia's most impressive Angkorian legacies. Prasat Preah Vihear, an imposing mountain-top temple guards the border between Cambodia and Thailand, was registered to be the world heritage in July 2008, became Cambodia’s second Unesco World Heritage Site (after the Angkor Archaeological Complex in Siem Reap). Preah Khan temples located in the south part. It's the lonely, jungle-engulfed temples and totally isolated and imbued with secret-world atmosphere. The famous 10th-century capital Koh Ker, which is day-tripping distance from Siem Reap.
Our favorite activity is to climb to the top of the Preah Vihear temple via the snaking road up the mountain which is very steep in places and we eventually emerge at the second enclosure of this king of the mountain temples. Explore the temple on foot and continue onwards to the final level, clinging to a cliff face in the Dangrek Mountains, towering hundreds of metres above lowland Cambodia below. The views from this most mountainous of temple mountains are breathtaking.