Ōya History Museum

大谷資料館

Ōya History Museum (Oya Shiryo-kan) in Utsunomiya presents the history of Oya stone and a vast underground quarry space. The official site lists the address as Oya-machi 909, Utsunomiya, Tochigi, and warns that car-navigation by street address can lead into the hills; it recommends searching by phone number or the facility name Oya Shiryo-kan. The museum publishes daily open or closed status and visitor information on its homepage.