Nan is small city in the northern part of Thailand. About 766 kms. from Bankkok to Nan city near Boundary of Loas. Nan situated in the valley along Nan river and divided into 15 districts. And occupies and area of 11,400,000 sq: kms(7 millions Rai) for 510,000 Buddhist people. Nan livable ancient city present to VNESSCO to be world heritage.