01 / Former Shimo-Yoichi Unjoya
A building with a long stone-weighted roofis the "only surviving unjoya."

The Former Shimo-Yoichi Unjoya was the base of merchants who held the Matsumae domain's trading rights with the Ainu, built in 1853. The town describes its long gabled roof weighted with stones. The national Historic Site commentary calls it the only surviving unjoya, with later alterations but the frame well preserved.
- Built 1853 (Kaei 6)
- Gabled stone-weighted roof (town)
- Important Cultural Property, 1971
- National Historic Site, 1973

