Kuti Rishi Ban Nong Bua Rai is located in Nong Bua Rai village, Tambon Chorakhe Mak, Amphoe Prakhon Chai, Buriram Province. The Fine Arts Department has announced the registration of Kuti Rishi Ban Nong Bua Rai (Sa Pleng) in the Government Gazette, 99^th volume, 75^th part, on 8^th March 2478 and also specified the areas of 1 Rai, 3 Ngan, 71 Tarangwa (3,084 square meters) to be the historical site in the Government Gazette, 99^th volume, 155^th part, on 21^st October 2525.

The Kuti Rishi Ban Nong Bua Rai was defined age by the comparative study of art design in early of the middle 18^th century Buddha. The compositions of architecture consist of Main Prasat with a square layout with indented corner, 5*5 meters size. In the east side, there is a protruding balcony with 2.60*3 meters size which pierced as a window in the south side. The Main Prasat has an only entrance in the east side and the other 3 sides are the fake doors. It is located in the encirclement of the laterite rampart with an entrance arch at the middle of eastern rampart. Another building inside of the rampart, such as a rectangle building at the southeast corner that facing to the Main Prasat with an entrance which created as a protruding balcony in the front. This building called “Banalai”, assumed that it is a place where collected the scripture. In the external area of the rampart at the northeast corner, there is a square pond which the edge was lined with laterite as a stairway to the bottom of the pond.

The Main Prasat and Banalai were constructed of laterite with sandstone, such as lotus bud of the tower, door column, lintel as well as door and window frame. The lintel of the Main Prasat has not appeared the evidence, it left only a part of gable that engraved a figure of Bodhisattva Avalokitesvara Chaturbhuja (4 hands) which represented to being the religious place of Mahayana Buddhism.

Base on a layout design of Kuti Rishi Ban Nong Bua Rai (Sa Pleng), it is one of the 102 religious places of infirmary. As the inscription of Prasat Preah Khan at Phra Nakhon town specified that King Jayavarman VII (1724 - 1763 B.E.) of the Ancient Khmer Empire pleased to build the Kuti Rishi Ban Nong Bua Rai throughout the land under his authority in that time. The register book of the ancient site of Maj. Lune de La Jongier called “Kuti Sa Pleng” (Lajoncquière, 1907: ๒๑๔). Many Arokaya Sarn were found in Thailand, especially in the northeast, such as Prasat Ta Muen Tod, Amphoe Phanom Dong Rak and Prasat Chang Pee, Amphoe Sikhoraphum, Surin Province, Prang Ku Kaew, Amphoe Muang, Khon Kaen Province, Kuti Rishi Ban Nong Bua Rai and Kuti Rishi Ban Khok Muang, Amphoe Prakhon Chai, Buriram Province, etc.

From the area of eastern ledge, there are the three sets of layered laterite stairway that paved as walkway to the cross-sign terrace which constructed of laterite. In the middle part was raised a floor slightly higher than the two flanks. It can be assumed that the Ban Dai Ton Tang may be the Phlab Phla base or the first entrance arch (external Gopura) of Prasat and also the hall building that constructed of wood with roof tiled. It looks like the arch door of the eastern cloister which is the final entrance (internal Gopura).

The Phanom Rung Historical Park information center divided the exhibition buildings into two parts.

1. The lobby exhibited the model, the mountain configuration, and the surrounding area of Phanom Rung Mountain and also the nearby historical site, such as Prasat Muang Tam, Kuti Rishi Ban Nong Bua Rai, Kuti Rishi Ban Khok Muang, etc.
2. The room of historical background the exhibition about the geographical and environmental background and also the cultural background in prehistoric and history period of Buriram Province.

In the second part consists of the exhibition rooms as follows:

1. The room of educational background exhibited the educational background of Prasat Phanom Rung in the past before 2478 B.E. which Prasat Phanom Rung was registered as the national historical site by the exploration of French academician in 2428 B.E., the proceeding of Krom Phraya Damrong Rajanubhab, the reading interpretation of Prasat Phanom Rung inscription by Prof. George Coedes, etc.
2. The room of historical background of Prasat Phanom Rung exhibited the historical background from reading and translating the inscription found at Prasat Phanom Rung.
3. The room of construction and architectural feature exhibited the construction of Prasat Phanom Rung and the layout of architectural elements.
4. The room of reconstruction and Prasat Phanom Rung Historical Park exhibited the reconstruction of Prasat Phanom Rung by the method called Anastylosis and the establishment of Phanom Rung Historical Park in 2531 B.E.
5. The room of art styles and Iconography presented about art history, decorated pattern in a various parts of the historical site, such as gable, lintel, and door column and also about Iconography, belief in deities, incarnation, and meaning of the engraved picture that appeared.
6. The room of Narai Bantomsin Lintel exhibited the apocalypse and the reclamation of the Narai Bantomsin Lintel.
7. The room of historical site in perimeter presented about the historical sites, such as Prasat Muang Tam, Prasat Plai Bat, Ku Suan Taeng, Prasat Nong Hong, Pet Thong Cave, the earthenware production site, the stone cutting site, Prasat Phum Phon, Prasat Muen Chai, Prasat Ta Muen Thom, Prasat Sikhoraphum, Prasat Ban Phluang, Prasat Sa Kamphaeng Yai, Prasat Phimai, Prasat Phanom Wan, Muang Sema, and Prasat Mueang Khaek.
8. The room of Arokaya Sarn and Thammasala exhibited about the historical site in a group of Arokaya Sarn or hospital and Thammasala or pavilion which is the building in the reign of King Jayavarman VII.

In the north side of a cross-sign terrace, there is a rectangular hall, 6.40 meter wide, 20.40 meters length that constructed of laterite with sandstone and facing to the south side with an entrance in the east side. On the Phlab Phla base, there are 8 stone pillars and a corridor that surrounded the three sided of Phlab Phla except the south side which is the front part of Phlab Phla. It can be assumed that all the buildings may be the wood with roof tiled and the outermost area of the building group has a rampart which constructed of laterite and volcanic stone surrounded in another layer.

At present, the Phlab Phla hall is compared as “Phlab Phla Pleuang Khreuang” which is the pavilion for preparing and dressing of king or royalty that came to Phanom Rung to purify Atman (soul). On the other hand, the local believed this building is the white elephant house because they misunderstood and thought that the hill top Prasat is the palace which always has the elephant house and the horse house in the front of palace.

The Phlab Phla Pleuang Khreuang can be defined age around the 18^th century Buddha coincided with Baphuon Khmer art. It can be assumed from the using of laterite as a main material and the pattern of lotus petal and four flower petal on the column head which is a prominent pattern in that time. However, it was found that the Naga hood which decorated the gable frame is a design of Klang Khmer art around the 16^th century Buddha which older than Bayon Period. It demonstrated about the rebuilding by using the part of old building which is a common matter of Prasat in Khmer culture.