Thailand's Buriram is very close to Cambodia, so there are many Khmer historical sites in the area. Phanom Rung stone castle is the largest of them, and is the largest and most perfect Khmer in Thailand. Historic sites. Every April 3-5, September 8-10, the morning light will shine through the 15 stone gates into the site. Every year from March 5th to 7th, October 6th to 8th, there are also sunsets that pass through Shimen. The locals believe that this magical phenomenon can bring good luck and good fortune. Of course, the Palau Temple is also listed by the Thais as one of the most worthwhile temples.