Phnom Bok is an Angkorian temple reached by climbing a steep natural hill, away from the dense circuit around Angkor Thom. APSARA National Authority places the monument in the Angkor Archaeological Park and describes a demanding ascent of 630 steps. The effort is part of the visit, not a detail to leave until arrival: heat, exposure and the climb shape whether the site is right for a particular traveller. At the summit, the temple and the surrounding plain offer a different perspective on the region from the better-known monuments at the centre of Angkor.
The sanctuary was built in the early tenth century during the reign of King Yasovarman I, who ruled from 889 to 910. APSARA identifies its Hindu dedication with the three deities Shiva, Brahma and Vishnu. The temple belongs to a group of hilltop monuments from the same period, including Phnom Bakheng and Phnom Krom. Rather than treating these as interchangeable viewpoints, it is useful to see them as a royal and religious landscape: each hill received a temple, and each occupied a distinct position in the surrounding plain.