Phnom Dei, Sacred hill in Siem Reap Municipality, Cambodia

Phnom Dei is a sacred site near Siem Reap built with clay brick temples and laterite walls that rises approximately 272 meters above sea level. The complex contains multiple structures featuring stone carvings and religious elements, including a Shiva lingam.

The brick sanctuary on Phnom Dei's summit was built under King Yasovarman I (r. 889–910), roughly a century before Banteay Srei (967). Georges Cœdès, in a 1918 EFEO bulletin, described it as a small brick shrine with one recess per side, interior about 2.30 by 4.30 m, already in very poor condition. It was reported by the geographical service in 1914, and the architect George Demasur began studying it that year before leaving for the First World War.

The temple displays stone carvings and religious sculptures that show Hindu influences in Khmer culture. These works represent an artistic tradition that was passed down through generations at this sacred location.

The site requires travel north of Siem Reap with access via local roads near Leang Dai. Arriving there is easiest with a local guide or organized transport since the route runs away from main highways.

The brick sanctuary on the summit, about 2.3 by 4.3 metres inside with a single recess per side, was recorded by Georges Cœdès in 1918 and already described as in very poor condition. He identified the hill shrine as Sri Purandaraparvata, dedicated to Harihara or to Shiva and Vishnu.