What the Tanaka Honke Museum Okaru Nikai Is
The Tanaka Honke Museum Okaru Nikai (田中本家博物館おかる二階) is an early Meiji-period two-storey building in fire-resistant storehouse construction behind the kitchen of the Tanaka merchant house in Suzaka City, Nagano Prefecture, registered as a Registered Tangible Cultural Property on 19 September 2003.
It projects eastward from the back of the kitchen wing of the Former Main House, like a wing turned at right angles. The roof is a gable on an east-west ridge, laid with pantiles, and broad lean-to eaves run along the east and north sides. The building area is 80 square metres.
"Nikai" means an upper floor. No source explains the "Okaru" part of the name, so it is best read simply as what the household called the building.
Why the Okaru Nikai Was Registered
The Tanaka Honke Museum Okaru Nikai was registered as serving as a model of design. From outside it reads as a thick-walled storehouse, yet the upper floor holds a well-finished reception room. The Agency for Cultural Affairs draws attention to that pairing: the fire protection of a kura and the dignity of a room fit for guests, stacked in one small building.
It also shows Western influence arriving in Suzaka in the early Meiji years. The long horizontal windows on the east face of the upper floor, and the metal brackets that carry the eaves, are not features of a traditional storehouse.
What to Look For: The East Face
Go round to the east side. The upper windows are wide and low rather than the small square openings usual in a kura, a way of bringing light into the room without giving up the thick walls.
Below them, the lean-to eave rests on metal brackets instead of timber arms. Stand close and look up at the underside; the ironwork is the clearest sign of the new taste.
A second broad eave on the north side covers the junction with the kitchen. Working space below, formal room above: the Okaru Nikai splits the household vertically in a way the single-storey kitchen could not.
Visiting the Okaru Nikai
The Okaru Nikai sits inside the estate behind the main house, so it cannot be seen from the street. Once inside, walk round to the east of the Former Main House to see it projecting from the kitchen.
Whether the upper room is open varies with the season, so ask at reception if you want to see inside. Opening hours and admission for the whole estate are on the Tanaka Honke Museum page.
- 📍 Plan Your Visit to Nagano
- Find tours, activities & transport passes near Tanaka Honke Museum Okaru Nikai
- [ Matsumoto Castle & Kamikochi Hiking Tours ]
Q&A
- Where is the Tanaka Honke Museum Okaru Nikai?
- It projects east from the back of the kitchen wing of the Former Main House, inside the estate, and is not visible from the street.
- What kind of building is the Tanaka Honke Museum Okaru Nikai?
- A two-storey storehouse-style building with a gabled pantile roof and a building area of 80 square metres, with broad eaves on the east and north and a formal room upstairs.
- Where does the Okaru Nikai show Western influence?
- In the long horizontal windows on the upper east face and in the metal brackets supporting the eaves.
- When was the Tanaka Honke Museum Okaru Nikai registered?
- It dates from the early Meiji period and was registered as a Registered Tangible Cultural Property on 19 September 2003, as serving as a model of design.
- Can I see the upstairs room of the Tanaka Honke Museum Okaru Nikai?
- Opening of the interior varies by season. Ask at reception on the day.
Basic Information
| Name | Tanaka Honke Museum Okaru Nikai |
|---|---|
| Location | 476 Oyama and other lots, Suzaka City, Nagano Prefecture |
| Designation | Registered Tangible Cultural Property (Building) |
| Year Designated | Registered 2003/9/19 (Heisei 15) |
| Quantity | 1 building |
| Dimensions | Building area 80 square metres |
| Owner | Tanaka Honke Museum (public interest incorporated foundation) |
| Public Access | Exterior visible on museum opening days; ask at reception about the interior |
References
- Database of National Cultural Properties (Agency for Cultural Affairs): Tanaka Honke Museum Okaru Nikai
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00003546
- Suzaka City: Registered Tangible Cultural Properties (Japanese)
- https://www.city.suzaka.nagano.jp/soshiki/4010/2/1/557.html
- Tanaka Honke Museum: About (Japanese)
- https://tanakahonke.org/about/
Last verified: 2026.09.25