Ancient Ishanapura
- Group N (Sambor Temple Group) "ក្រុមប្រាសាទសំបូរ ឬក្រុមខាងជើង": Prasat Sambor is considered the main temple and it dates from the 7th century. It was dedicated to one of the reincarnations of Shiva known as Gamhireshvara.
- Group S (Yeay Poan Temple Group) "ប្រាសាទយាយព័ន្ធ ឬក្រុមខាងត្បូង": Prasat Yeah Poan comprised a total of 22 sanctuaries (5 have octagonal shapes) with two wall rampart, and was built of brick, masonry, laterite, and sandstone in the rectangular form in the 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.
- Group C (Lion Temple Group) "ក្រុមប្រាសាទតោ ឬក្រុមកណ្តាល": It is occupied by the Central Sanctuary or Prasat Boram with lion sculptures that had inspired the popular name of Prasat Tor (The Lions' Temple). It is, however, the newest group dating the 9th century. The other main feature is the Tower of Ashram Issey, but there were also other constructions (18 temples) now in ruin.
