The Guest Wing Above the River
Min'unkaku Ochiairo Main Building (眠雲閣落合樓本館) is a two-storey timber building of 1933 to 1935 at the hot spring inn Ochiairo in Yugashima, Izu City, Shizuoka Prefecture, entered on the national register of Registered Tangible Cultural Properties on 18 November 1999. Its Irimoya-zukuri hipped-and-gabled roof is covered in copper sheet laid over battens, and its floor area is 356 square metres.
It stands in the southeast corner of the grounds, nearer the stream than anything else on the site. Of the seven registered buildings, Min'unkaku Ochiairo Main Building is the one most fully given over to guest rooms, and it was the second to be built.
Why It Is Registered
The criterion cited is that the building serves as a model of design. The Agency for Cultural Affairs database records that the posts and Nageshi tie beams are all of good hinoki cypress, that rare and irregular timbers were chosen for the alcoves and shelving of each room, and that the interior as a whole is finely composed. This is a building listed for what is inside it rather than for its silhouette.
There is a consistent policy behind the choice of wood. The structural members a guest actually sees, the posts and the tie beams, are held to one species so that colour and grain stay quiet; the showy timbers are then admitted only at the Tokonoma and the shelves. Fill a room entirely with curiosities and it turns noisy. Min'unkaku Ochiairo Main Building keeps the ground calm so that each individual piece can register.
Izu in the early Shōwa era had a busy inn-building trade, skilled carpenters and easy access to good timber. Izu City writes that the period can be felt in every corner of these buildings. The 356 square metres of Min'unkaku Ochiairo Main Building are a product of that alignment of conditions.
What to Look At
The plan turns a corner. This was not a formal gesture: the bend exists so that guest rooms on the east and the south can both face the stream. A rectangle would have been simpler to build and would have left fewer rooms with a view of water. Min'unkaku Ochiairo Main Building gives up some efficiency and buys orientation with it. Walk the corridor and the outlook changes at the angle.
The copper roof separates this building from its neighbours. Copper shifts colour over the decades, so the reddish sheen it had when new is long gone. Seen from the garden, the difference against the tiled roofs of the entrance building and the banquet hall is easy to read.
Inside, look at the Tokobashira alcove posts and the shelving around them. The Japanese term meiboku kiboku does not mean flawless straight timber; it means wood with burls, knots and bends that a cabinetmaker has decided to keep. In Min'unkaku Ochiairo Main Building these differ from room to room, so no two rooms repeat. If your stay takes you through more than one, the comparison is worth making.
Visiting
Min'unkaku Ochiairo Main Building is a working guest wing and is not open to the general public. Only overnight guests see the interior, and because these are occupied bedrooms, no visitor enters a room another guest is using. Whether your own room falls in this building can be settled by checking the room type when you book.
For the exterior, take the garden side facing the stream. Standing at the point where the plan bends brings two elevations and the copper roof into a single view. Inn staff run a walking commentary on the registered buildings for guests, and the shared spaces of Min'unkaku Ochiairo Main Building are covered on it.
The inn publishes no statement on photography, and the rules for guest rooms may differ from those for shared areas, so follow what the staff say. Directions to the site and the conditions for staying are set out on the Min'unkaku Ochiairo page.
- 📍 Plan Your Visit to Shizuoka
- Find tours, activities & transport passes near Min'unkaku Ochiairo Main Building
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Questions and Answers
- Can I see Min'unkaku Ochiairo Main Building without staying at the inn?
- No. It is a working guest wing and is not open to the general public. Only overnight guests see the interior, and rooms occupied by other guests are off limits.
- Why does Min'unkaku Ochiairo Main Building have an L-shaped plan?
- So that guest rooms on both the east and the south side can look out over the stream. Turning the plan increases the number of rooms facing the water.
- What is the roof of Min'unkaku Ochiairo Main Building made of?
- Copper sheet laid over battens. Seen from the garden it reads quite differently from the tiled roofs of the entrance building and the rosewood banquet hall.
- What was singled out in the interior of Min'unkaku Ochiairo Main Building?
- Posts and tie beams unified in good hinoki cypress, with rare and irregular timbers reserved for the alcoves and shelves of each room. The Agency for Cultural Affairs calls the interior finely composed as a whole.
- When was Min'unkaku Ochiairo Main Building built and registered?
- It was built between 1933 and 1935 and became a Registered Tangible Cultural Property on 18 November 1999.
Basic Information
| Name | Min'unkaku Ochiairo Main Building |
|---|---|
| Location | 1887-1 Yugashima, Izu City, Shizuoka Prefecture |
| Designation | Registered Tangible Cultural Property (Building) |
| Year Designated | Registered 1999 (Heisei 11) |
| Quantity | 1 building |
| Dimensions | Floor area 356 square metres |
| Owner | Ochiairou Co., Ltd. |
| Public Access | Not open to the public; guests of the inn only |
References
- Agency for Cultural Affairs, National Cultural Properties Database: Min'unkaku Ochiairo Main Building
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00001413
- Cultural Heritage Online: Min'unkaku Ochiairo Main Building
- https://online.bunka.go.jp/heritages/detail/181323
- Izu City: Nationally Designated and Registered Cultural Properties
- https://www.city.izu.shizuoka.jp/soshiki/1013/8/3/1090.html
- Ochiairo: About
- https://www.ochiairo.co.jp/about/
Last verified: 2026.09.13
