Phnom Bayang is located in Por Rorng village, Preah Bat Choan Chum commune, Kirivong district, about 43 kilometers south of Takeo provincial town or about 121 kilometers south of Phnom Penh. From Phnom Penh, take National Road 2 via Bati, Sam Rong, Daun Keo and Trang districts.

Bayang temple was built between AD 615 and 635 by King Pavavarman II on the top of Phnom Bayong, a 313-meter-high mountain. Its diameter is 13 meters by 9 meters and it is 12 meters high. Constructed of laterites, brick and other stones, it is heavily damaged. Pieces of the temple litter the ground; the roof has collapsed, and the laterite rampart has been damages.

Bayang temple is a historical site that attracts both foreigners and Cambodians doing research about their ancestors. The road to the mountain, however, is old and difficult to access in the thick forest. The temple is reachable by climbing 390 steps. In addition to Bayang, there are four other temples on the mountain- Preah Kor temple, North Kanang temple, East Kanang temple and Kampul Kanang temple. All are for Brahman worship and contain a Silva Lingam.

Visitors to the site will come to understand how Cambodian history and culture was influenced by the outside world. Because without access to the mountain, however, the only people who will visit the site are researchers studying Cambodian history.

In Kirivong District, there is a stream, Pha Oak, which flows 1,000 meters from its source to where people congregate to swim or bathe. The stream is 6 meters wide during the rainy seasons and 2 meters wide during the dry season. The sound of the water falling from the mountain top is almost musical and the scenery is beautiful.