This museum was established on 7 December 1957 on the north bank of Mansarowar Lake. Late Chandradhari Singh of Ranti Dyordhi (Madhubani) donated all the artifact and other rare objects. It was shifted in double story building in 1974. There is no entry fee for visiting the Museum. It remains open for public on everyday except Monday. On the basis of arrangement and materials of the Museum it can be devided into eleven type of Halls.