The Prasat Yeai Poeun complex comprised a total of 22 sanctuaries (5 have octagonal shapes) with two wall rampart, and was built of brick, masonry, laterite and sandstone in rectangular from in 7th century (600-635) during the reign of Isanavarman I to dedicated to Shiva. They were built on a hill with Gopura from the eastern and western entrances joining to an outside laterite rampart. The inner rampart reached by gateways from the four directions and joined to the brick rampart carved in various clustering figures.
Along the sanctuary contained the eastern and western Gopura joined to the laterite rampart (304m x 274m or 83,296 square-meter surface). Gopura contained framed door with diamond columns and a lintel built of sandstone. Eastern Gopura contained a buried large inscription (size: 2.41m x 0,9m x 0,15) inscribed with 17 lines of script. This inscription was brought to be kept in Kampong Thom Museum.
The ancient temple complex of Sambor Prei Kuk is located just to the north of the town of Kompong Thom, Cambodia.
Located on Eastern bank of Tonle Sap, the central part of Sambor Prei Kuk is divided mainly into three groups. The structures of the overall archaeological area were constructed at variable times: the southern groups and north (7th century), and the central group (later). The buildings of Sambor Prei Kuk are characteristic of the Pre-Angkorean period with a simple external plan. The principal material is brick, but sandstone is also used for certain structures