opened in 1970 on the sannomaru site of Saga Castle in the city of Saga, Japan, in 1970. It is one of Japan's many museums which are supported by a prefecture.
The museum displays materials relating to the natural history, archaeology, history, art, craft, and folklore of Saga Prefecture. Adjacent is the , which opened in 1983 as part of the centennial celebrations of the establishment of Saga Prefecture. A Tyrannosaurus rex model displayed at the museum, relocated from the National Museum of Nature and Science, inspired the design of the original Godzilla.