Built in 1905, Hongokan is Japan's oldest 3-storey wooden lodging house. The L-shaped building has approximately 70 rooms and a total floorspace of 1500 sqm which is very large in scale for a wooden structure.
It was built by an aristocratic family from Gifu Prefecture and was initially used as a boarding house for the Tokyo Girl's Highschool (now known as Ochanomizu Women's College), but soon became a high-grade lodging house that provided luxury accommodation.