Former Kōjiro Village Kōjiro Junior High School building
In 1947, shortly after the war, the former Kōjiro Village Kōjiro Junior High School was opened.
The school was closed in 1962. For a time, it was used as a sewing factory, but in 2010 it was reborn as the Kunimi Exhibition Hall of the Unzen History Museum.
On the south side of the building is the Historical Museum Kunimi Exhibition Hall, which displays a variety of artifacts from stone tools dating back 30,000 years to glassware from the Showa period (1926-1989 ). The museum holds special exhibitions of the results of excavations at the site. The north side of the school has been restored to its original wooden form from the old Junior High School times, retaining the old pillars, floorboards and wavy window panes.