It was built in 1898 by Charles Brooke, the second Rajah of Sarawak, to safeguard government activities in the area, and now serves as a museum.

Fort Hose, strategically located on a hill overlooking the Baram River in the town of Marudi in northern Sarawak, is named after Charles Hose, a British colonial administrator and ethnologist, and nephew of George Hose, Bishop of Sarawak and Labuan.

Hose entered the Sarawak civil service as a cadet in 1884, was assigned to the newly created eastern Baram District, recently ceded by the Sultan of Brunei to Charles Brooke, the second Raja of Sarawak, and was later promoted to Resident of Baram in 1891.

In 1899, a peace accord was held at the fort between local ethnic tribes orchestrated by Hose.

[4] Known as the Baram District Museum, its collection includes photographs and exhibits relating to the cultural heritage of various local communities including the Kayan, Kenyah, Kelabit, and Penan people.