Phimai National Museum about 300 metres from Prasat Phimai. At first, it was an open site museum, collecting art objects from Prasat Phimai and its neighboring sites,and under the supervision of the Archaeology Division. , the Fine Arts Department received a budget from the Royal Contribution Project to develop Phimai National Museum.
The museum is the center of cultural heritage in north-eastern Thailand, emphaxizing artifacts from the lower Isan, such as Nakhon Ratchasima, Chaiyaphum, Buri Ran,Surin and Si Sa Ket. The interesting art objects belong to Dvaravati and Khmer art styles.
The Dvaravati style can be seen on Sima or boundary stone while the Khmer style is evident in stone carving of lintels, pendiments, pillars and antefixs.