Hijiri Aviation Museum (聖博物館, Hijiri hakubutsukan) is a local history museum located in Omi, Nagano. The museum was opened by the village of Omi on July 20, 1965, to contain displays of local natural history (birds, fish, insects, mineral samples and plants) and human history (Buddhist statues, historical documents and records pertaining to Omi Village). It was expanded on November 19, 1971, with the addition of an aviation pavilion and a number of outdoor static exhibits of former Japan Self-Defense Forces aircraft. The museum facilities were renovated in April 2012. The display also includes a JNR Class D51 steam locomotive manufactured in 1943 and a 41 cm/45 3rd Year Type naval gun salvaged from the wreckage of the Japanese battleship Mutsu.