The sandstone sanctuary stands on a three-tiered basement, 6 m high in overall. It has a 5 m square central chamber that opens to the four cardinal points with as many vestibules. Their classical ornamentations, unfortunately ruined, suggest that the sanctuary belongs to the first half of the 12th century and is older than the gopura. Even the characteristic "chimney-like" tower that stands above seems to be a later addition (Willetts identifying it as belonging to Jayavarman VII's period), maybe a frame for a covering.