A Herring Master's House Above Ishikari Bay
The Ginrinso Former Main Building (銀鱗荘旧本館, also written Ginrinsō), officially registered under the name Former Inomata Family Residence (旧猪俣家住宅), is a late Meiji herring-fishery mansion at Sakura 1-chome in Otaru City, Hokkaido, entered on the national register of Tangible Cultural Properties on 27 February 2023.
It was not built on this hillside. The house first went up in the town of Yoichi, further west along the same coast, for a net-master named Inomata Yasunojo whose money came out of the spring herring runs. The Agency for Cultural Affairs dates the fabric to the late Meiji period, between 1898 and 1912; the operator and several local accounts put the completion at 1900 and say three years of work went into it.
Approach the west elevation and the eaves are what register first. They lift at the corners with a curve that belongs to shrine and temple carpentry, not to a fisherman's dwelling. That is no accident. Inomata is said to have brought a temple carpenter, Yoneyama Senzo, from his home province of Echigo on the Japan Sea coast of Honshu, and the man worked in the idiom he knew.
The relocation happened in 1938. Otaru was then in the middle of an ambitious residential development on its eastern edge, driven by the industrialist Noguchi Kiichiro, and the old Inomata house was moved up to Hiraiso Cape to serve as the project's centrepiece. It opened as an inn the following year. The name Ginrinso, roughly "silver-scale villa," is credited to Ishiguro Hidehiko, then governor of Hokkaido.
Why This Building Was Registered
Hokkaido has other surviving buildings from the herring economy. Most of them are nishin banya, the combined barracks-and-residence type in which the master's family and the seasonal crews slept under one roof, the two halves of the plan divided by an earth-floored corridor. The Inomata household did not work that way. Otaru City's cultural properties office states that the master's quarters and the crew quarters were kept entirely separate here, and that what survives as the Former Main Building is the master's house alone.
That distinction is the point. A dedicated owner's residence on this scale has no close parallel elsewhere in Hokkaido. The registration criterion cited on the national database is contribution to the historic landscape of the country, and the building's silhouette on the cape does exactly that, visible from the coast road and from the water.
The registered specification gives the structure as timber-framed, three storeys, tile-roofed, with a building area of 420 square metres. The Agency's descriptive note is more granular: the relocated portion is two storeys, entered on the long side, and carries a bōrō, a rooftop lookout of the kind a net-master used to watch for the shoal. The third storey in the formal specification appears to count that lookout. Inside the relocated section is a mutsumadori hiroma, a great room laid out on a six-room grid, with a household shrine two and a half ken wide, close to four and a half metres, set into it. A basement-level single-storey wing with a sunroom was added later and forms part of the registered whole.
Registration as a Tangible Cultural Property is a lighter designation than Important Cultural Property status. It obliges the owner to notify the government before altering the exterior substantially, and in exchange the building stays in use. Ginrinso is a working inn owned by Nitori Holdings, which is the reason the interior is maintained rather than mothballed.
What to Look For
The entrance hall gives you the timber immediately. Beams of local todomatsu fir and tamo ash cross overhead in an open well, sized well beyond what the span required, which is how a net-master advertised a good season. Kuri chestnut and harigiri appear elsewhere in the frame.
Look down at the base of the front wall. The koshihame panelling is faced with large granite blocks brought in from abroad at a time when moving stone that size to a Hokkaido fishing port was genuinely awkward. Nobody standing at the door would have missed the implication.
In the great room, the household shrine is the fixture people photograph. It was there to petition for a heavy catch, and its scale is proportional to what was being asked for. Otaru City describes the main room as fifty tatami mats; at least one magazine account gives seventy-five, so treat any single figure with caution and simply notice that the space is large enough to lose your bearings in.
The decorative carpentry rewards slow looking. Sukiya teahouse conventions turn up in the joinery, alongside share-gi and hengi, deliberately irregular or knotted timbers chosen for character rather than straightness. Some motifs are drawn from Hokkaido rather than from mainland pattern books.
Ginrinso operates as a ryokan and restaurant and is not a museum. There is no general admission and no free access to the grounds; you see the interior by staying overnight, by booking a meal, or by taking a hot-spring day plan when one is offered. Reservations are required in all cases. It is the only herring mansion in Japan where you can actually sleep, which is a large part of why people come. The building has also served as the venue for professional shogi title matches. Photography inside is at the discretion of staff, particularly where other guests or the art collection are involved, so ask at the desk rather than assuming.
Getting there: from JR Otaru-Chikko Station the property is a short taxi ride up the cape, about five minutes, and the inn runs a pick-up service for booked guests. Walking is possible but the last stretch is a steep climb. Otaru Station is roughly ten minutes further along the line, so the building pairs easily with a canal-and-warehouse day in the city centre.
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Q&A
- Can I visit the Ginrinso Former Main Building, and is there an admission fee?
- There is no admission ticket. The Ginrinso Former Main Building is part of a working ryokan and restaurant, so access is through an overnight stay, a booked meal, or a day-use hot-spring plan when available. All of these need a reservation in advance.
- When was the Ginrinso Former Main Building registered as a cultural property?
- It was registered as a National Registered Tangible Cultural Property on 27 February 2023, under registration number 01-0163. The neighbouring Grill Ginrinso was registered on the same day. Separately, the building has been designated a Historic Building by Otaru City under the name Former Inomata Residence.
- Why was the Ginrinso Former Main Building moved from Yoichi to Otaru?
- The move took place in 1938 as part of a modern residential development on Otaru's eastern side, led by the businessman Noguchi Kiichiro. The house was relocated to Hiraiso Cape to act as the development's symbol, and it opened as an inn in 1939. The timing coincided with the seventieth anniversary of the opening of Hokkaido.
- How is the Ginrinso Former Main Building different from an ordinary nishin banya?
- A standard nishin banya housed the fishing master and his hired crews in a single building, with an earth-floored corridor separating the two living zones. Otaru City records that the Inomata family kept the two functions in separate buildings, and the Former Main Building was the master's residence alone. A dedicated owner's house of this size is not paralleled elsewhere in Hokkaido.
- How do I reach the Ginrinso Former Main Building by public transport?
- The nearest station is JR Otaru-Chikko on the Hakodate Main Line, about five minutes by taxi. The inn arranges pick-up for guests with reservations. Walking up from the station is possible but involves a steep final climb to the cape.
Basic Information
| Name | Ginrinso Former Main Building (Former Inomata Family Residence) / 銀鱗荘旧本館（旧猪俣家住宅） |
|---|---|
| Location | 1-2 Sakura 1-chome and adjacent lots, Otaru City, Hokkaido |
| Designation | National Registered Tangible Cultural Property (Structure), registration no. 01-0163 |
| Year Designated | 2023 (registered 27 February 2023, 104th round) |
| Quantity | 1 building |
| Dimensions | Timber-framed, three storeys, tile roof; building area 420 m² |
| Owner | Nitori Co., Ltd. |
| Public Access | In use as a ryokan and restaurant. No general admission; access by reservation for lodging, dining, or day-use bathing plans. |
References
- National Cultural Properties Database, Agency for Cultural Affairs — Ginrinso Former Main Building (Former Inomata Family Residence)
- https://kunishitei.bunka.go.jp/heritage/detail/101/00014445
- Cultural Heritage Online — Ginrinso Former Main Building (Former Inomata Family Residence)
- https://online.bunka.go.jp/heritages/detail/602439
- Otaru City Board of Education — Ginrinso (Former Main Building / Grill Ginrinso)
- https://www.city.otaru.lg.jp/docs/2023040300020/
- Ryotei Yuyado Ginrinso — Registered Tangible Cultural Property
- https://www.ginrinsou.com/concept/
Last verified: 2026.08.27