North-East - BURIRAM Buriram is an important place in historical tour. Khmer ruins constitute the most important historical sites of the lower region of Isan . Main Attractions: Khao Phanom Rung Built at the same time as Angkor Wat, Prasat Khao Phanom Rung was originally a temple glorifying Hindu deity Shiva . Standing on an extinct volcano, the complex holds an extraordinary collection of Khmer art . Built with red sandstone, it is the most impressive of the Khmer sites in Thailand.     Muang Tam Predating Phanom Rung by about 12 years , Muang Tam is a lovely Khmer temple , constructed from sandstone and laterite.