Northern River Valleys GuideThe Northern River Valleys is a hilly area with various river valleys in Northern Thailand. HotelsFind hotels in Nan, Lampang, Phayao, Lamphun, Phrae and more. NanNan is a town in the remote valley of the Nan River in the Northern River Valleys region of Northern Thailand, bordering Laos. LampangLampang, also known as Nakhon Lampang, a city in the Northern River Valleys of Northern Thailand. PhayaoPhayao is a city in the Northern River Valleys of Northern Thailand Virtually enveloped by mountains and valleys, Phayao is a peaceful province. LamphunLamphun is a city in the Northern River Valleys of Northern Thailand. Legend handed down for more than 1,400 years refer to this ancient town as Hariphunchai. PhraePhrae is a city in the Northern River Valleys of Northern Thailand. An old and important community of Northern Thailand, Phrae was founded after Chiang Mai had been established as the capital of the Lanna Thai kingdom. Hang ChatHang Chat is a town in Lampang. Hang Chat is the centre of a district 20 minutes outside Lampang.