goes back to the depths of the history of Thailand. For centuries it was a separate, autonomous kingdom with few relationships with the outside world.Parts of the old city wall and several early wats dating from the Lanna period can be seen in contemporary Nan. The city's wats are distinctive; some temple structures show Lanna influence, while others belong to the Thai Lue legacy brought from Xishuangbanna in China, where the Thai Lue people originated.