Nan has a population of 478,246 people.Nan was once an independent kingdom and is now a refuge for travelers who wish to explore the natural beauty of northern Nan features spectacular natural beauty, including six national parks and most activities are associated with the outdoors, including trekking, mountain biking, and river rafting.Nan features spectacular natural beauty, including six national parks and most activities are associated with the outdoors, including trekking, mountain biking, and river rafting.