Nan is a town in Northern Thailand. It is some 668 km north of Bangkok. Neighboring provinces are Uttaradit, Phrae and Phayao and to the north and east it borders Sainyabuli of Laos. It is spread along the Nan river's right bank. The area is heavily forested with arable land used mainly for agriculture. It is an ancient city steeped in history with its long association with the Lannathai culture and the Sukhothai kingdom.
Nan is a small city, primarily devoted to commercial, administrative, educational, and hospital activities. The old heart of the city, is where Wat Phumin, the National Museum and other tourist attractions are located. The city's industrial and tourist development remains limited, but is now being improved with the opening of the border towards Laos and beyond towards China.