The local wisdom of the ancient is amazing. Besides, the astonishing architecture of the Prasat Phanom Rung where is a grand and beautiful. Nobody knows, there is a mysterious calculation on the date and time for the sunlight that was shining through the 15 doorways in different seasons four times per a year, it is very incredible. Phanom Rung Historical Park or Prasat Phanom Rung is on an extinct volcano. This Hinduism Religious Compound, Sivaism sect. It has been reconstructing for many period, since 15 - 18 Buddhist era. It was built from pink sandstone and located on the peak of Phanom Rung hill. In conclusion, King Rajendravarman II is an important one for the constructing of The Thewalai (Hindu temple) on Phanom Rung hill to Siva in the 15 - 16 Buddhist era. But it is not enormous like that. Later, The Jayavarman VI donated the land and sent some servants to The Phanom Rung shrine. In 17 Buddhist era, the reign of Narentrathit, a royalty of Mahitarapura who ruled over the land (which belong to the early ancestor of the Suriyavoraman II, who built Nakhon Wat), and established this castle and practiced to be yogi at Phanom Rung Historical Park.