丽江纳西族自治县地处滇西北的中部，青藏高原的东南边缘，金沙江上游。县城丽江古城海拔2，400米，面积约3.8平方公里,始建于南宋末年，盛于明清，一直是滇西北政治、军事、经济和文化重镇。 1997年12月，丽江古城被联合国教科文组织列入《世界遗产名录》。大研古城从公元1253 Lijiang Naxi Autonomous County is located in the central part of northwestern Yunnan, the southeastern margin of the Qinghai-Tibet Plateau, and the upper reaches of the Jinsha River. The ancient city of Lijiang County, 2,400 meters above sea level, covers an area of ​​about 3.8 square kilometers, was built in the late Southern Song Dynasty, Sheng Ming and Qing Dynasties, has been a political, military, economic and cultural center in northwestern Yunnan. December 1997, Lijiang Ancient City by UNESCO included in the “World Heritage List.” The ancient city of Dayan from 1253 AD