Nakhon Sawan, literally Heavenly City, is a city in Lower Northern Thailand. It is located at the confluence of the Ping and Nan rivers, and considered the gateway to the North. It has a population of about 90,000.
Nakhon Sawan Province, also known as "Pak Nam Pho", is where the rivers of Ping, Wang, Yom, and Nan converge and form the Chao Phraya River, the most important waterway of Thailand.
Nakhon Sawan is in the lower northern part of the country between Northern Thailand and the Central Plains. It is regarded as "the doorway to the North" and it is the hub of transportation in the Lower North.