Ōya Quarry Museum (大谷資料館) 大谷資料館
20,000 sq m dug over 70 years (1919–1986): during the war it was a secret fighter-plane factory.
A huge underground quarry of Ōya tuff, now open to visitors.
Tochigi
資料館入口, 立岩入口, 大谷景観公園
Assassination Classroom
Live-action filming location. The interiors were used as a set for the first live-action Assassination Classroom film, from 2015, as the Tochigi Film Commission confirms.