Thom is the capital of the last and most of the อาณาจักรขะแมร์ strong city. Established in the end of century Christian Professor 12 by Suryavarman II 7 territory covers an area of 9 square kilometer in the north of Angkor Wat. There are many buildings within the city since the beginning. And 7 Suryavarman II and created by the crown prince. In the heart of the campus is the main castle of God Chai varman called Bayon, and other important areas surrounding the area of Chaiyaphum next north.