Nan is a remote and culturally rich province in the mountains of northern Thailand bordering Laos, known for its beautiful Lanna-style temples including the famous Wat Phumin with its extraordinary 19th-century murals. The Nan River valley, the Doi Phu Kha National Park with its endemic Chomphu Phu Kha trees, and the traditional villages of the Mabri, Hmong, and Mien hill tribes make it one of northern Thailand's most rewarding destinations.