Sambor Prei Kuk
This pre-Angkorian temple site dates from the early 7th century when it was the capital of the Upper Chenla Empire. More than 100 brick temples dedicated to various Hindu gods sit within the forest here, many half-swallowed by mammoth tree roots. Archaeologically, the site is extremely important, containing some of Cambodia's oldest surviving buildings, but you don't have to be an archaeology buff to appreciate the ethereal beauty of this tree-wrapped site. The most important temples in the area are found in Prasat Sambor, Prasat Tao, and Prasat Yeay Peau, which all have remarkably clear carvings on their temple walls and plenty of ethereal ambience provided by twisting tree trunks and coiling vines. You can access Sambor Prei Kuk from Kompong Thom.