Phnom Chisor temple was built in the early 11th century by King Suryavarman I (AD 1002-1050), who practiced Brahmanism, a form of ancient Hinduism, which practiced sacrifice.
Constructed of sandstone and other stone, it is 60 meters long and 50 meters wide and sits atop the mountain. Two galleries surround the temple. The first gallery is 60 meters long on each side. The second, smaller gallery is in the middle, where there is the main worship place with two doors and a wooden statue. There are beautiful sculptures on the lintel and the pillars.
Phnom Chisor Pagoda was built in 1917, destroyed by the Khmer Rouge during the war in the1970s and rebuilt in 1979. You can climb the staircase on the west side of the mountain, which has 390 steps and descend by the south side staircase, which has 408 steps. Another set of stairs in front of the temple links the temple to Sen Chhmos temple, Sen Phou Vang temple and Tonle Om, a lake considered sacred by Brahmans and used for washing away sins. A large rock yard nearby about 100 meters long and 80 meters was once the site of several other temples, but only parts of these temples remain standing.