A 5.3-Square-Metre Building on the National Register
The Koyanagi Sake Brewery Pump House (小柳酒造ポンプ小屋, Koyanagi Shuzō Ponpu-goya, also romanised Koyanagi Shuzo Ponpugoya) is a brick structure built in 1928 at 903-1 Ogi-machi, Ogi City, Saga Prefecture, and it was entered on Japan's national register of Tangible Cultural Properties on 14 February 2002.
Its recorded building area is 5.3 square metres. The plan runs 1.8 by 3 metres.
Read those figures twice and the oddity settles in. This is a nationally registered piece of Japanese cultural property with a floor smaller than a car parking bay, and it holds that status alongside castle keeps and temple pagodas. The Agency for Cultural Affairs files it under the heading of secondary industry, building type, which is bureaucratic language for something that once had a job to do.
Registration numbers on the property run from 41-0027 to 41-0040 and thirteen listings survive; the pump house holds 41-0035. It is the runt of the group, and arguably the most revealing member of it. Its place on the ground is south of the East Water Tank, among the brick equipment gathered on the south side of the kettle room.
Slag Brick, a Segmental Arch, and a Roof That Does Not Match
Three of the four walls, on the east, south and west, are brick laid a single course thick. That is thin by any measure, which tells you the builders wanted shelter rather than mass. The north face was left open across its full width and spanned by a segmental arch (欠円アーチ, ketsuen āchi), a shallow arc struck from a circle rather than a semicircle, giving a wide, low opening for the entrance. Above, the roof is a rikuyane, a flat roof, which puts the pump house at odds with almost everything around it in a compound otherwise roofed in clay pantile.
The brick itself repays attention. Agency records specify kōsai renga (鉱滓煉瓦), slag brick, made using metallurgical slag as aggregate instead of the clay used for ordinary red brick. Slag brick was cheap and industrial, a by-product material that found its way into utilitarian construction in the 1920s. It also tends to read darker and greyer than the warm orange brick a visitor might expect. If the wall in front of you looks strangely sombre for brickwork, that is the reason.
The pump house sits just south of the East Water Tank (東貯水槽), itself a registered brick structure of four square metres. The West Water Tank (西貯水槽, 4.8 square metres) and a brick chimney standing 17 metres tall complete a small family of masonry pieces scattered through a yard of timber buildings. The grouping is not accidental. Water is the raw material a sake brewery cannot compromise on, and Ogi sits on groundwater filtered through the Tenzan range, the same water that made the area a brewing centre counting twenty-four producers at its height, four of them in Ogi-machi itself.
Agency documentation places the pump house within a programme of plant improvements begun in 1926, the final year of the Taishō era, which also produced the Shōwa kura and the kamaba or kettle house. That dating matters. It puts this shed in the middle of a decision by a family firm, then well over a century old, to mechanise. Somebody chose to spend money on pumping water rather than carrying it.
Visiting
The interior of the Koyanagi Sake Brewery Pump House is closed. It is working fabric on the production side of a functioning brewery, not an exhibit, and it has neither a signboard nor an admission charge.
The roof is the way to find it. Every other building in the yard carries a pitched pantile roof; this is the only flat one. Look for a small brick box with a level top. It stands south of the East Water Tank, and the segmental arch spanning the full width of its north side is the front.
The yard can be entered during the hours of the Ogi Distillery in the converted part of the Showa West Storehouse, 11:00 a.m. to 5:00 p.m. with irregular closing days. Everything south of the kettle room belongs to the working side, so how close you can get depends on the day.
No photography policy has been published, so ask at the shop or the distillery counter. Directions, parking and the opening terms of the shop are set out on the Koyanagi Sake Brewery page. Details here were checked on 14 September 2026.
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Q&A
- Can I go inside the Koyanagi Sake Brewery Pump House?
- No. The pump house is a service structure on the working grounds of a private brewery and is not opened individually. Visitors are welcome at the brewery shop and at Ogi Distillery on the same site, and staff at either counter can tell you how much of the yard is accessible when you visit.
- What is the Koyanagi Sake Brewery Pump House built from?
- Slag brick (鉱滓煉瓦), a type made with metallurgical slag rather than fired clay. Walls one brick thick close the east, south and west sides; the north side is a single wide opening under a segmental arch. The roof is flat, unlike the tiled roofs of the surrounding buildings.
- When was the Koyanagi Sake Brewery Pump House built and registered?
- It was built in 1928 (Shōwa 3) as part of improvements begun in 1926. Registration took effect on 14 February 2002 and was gazetted on 12 March 2002, in the thirty-second round of registrations. Its registration number is 41-0035.
- Why was the Koyanagi Sake Brewery Pump House registered at all?
- Because it met the criterion of contributing to the historic landscape of the nation. The register covers buildings roughly fifty years old or older, and changes to them are notified rather than licensed, the aim being to keep buildings by going on using them. The pump house survives as equipment in a working brewery.
- How many buildings at Koyanagi Sake Brewery are registered?
- Thirteen. The Agency for Cultural Affairs database and the Ogi City cultural property page agree on that figure. Registration numbers run from 41-0027 to 41-0040, but no entry for 41-0039 is currently held in the Agency database.
Basic Information
| Name | Koyanagi Sake Brewery Pump House (小柳酒造ポンプ小屋) |
|---|---|
| Location | 903-1 Ogi-machi, Ogi City, Saga Prefecture |
| Designation | Registered Tangible Cultural Property (Structure); registration number 41-0035; criterion: contribution to the historical landscape of the nation |
| Year Designated | Registered 14 February 2002; gazetted 12 March 2002 (32nd round) |
| Quantity | 1 building |
| Dimensions | Building area 5.3 m²; plan approximately 1.8 m × 3 m; brick construction with flat roof |
| Owner | Not published in the Agency for Cultural Affairs database |
| Public Access | Not opened as an individual site. Brewery shop approx. 9:00–18:00, closed Sundays (0952-73-2003); Ogi Distillery 11:00–17:00, irregular closing days, free (0952-60-2095) |
References
- National Cultural Properties Database, Agency for Cultural Affairs — Koyanagi Shuzo Pump House
- https://kunishitei.bunka.go.jp/heritage/detail/101/00002720
- Cultural Heritage Online — Koyanagi Shuzo Pump House
- https://online.bunka.go.jp/heritages/detail/187450
- National Cultural Properties Database, Agency for Cultural Affairs — Koyanagi Shuzo Chimney
- https://kunishitei.bunka.go.jp/heritage/detail/101/00002717
- Ogi City — Registered Tangible Cultural Properties of Ogi City
- https://www.city.ogi.lg.jp/main/9887.html
- Saga Prefecture Heritage Database — No. 2005-9, Koyanagi Shuzo
- https://www.pref.saga.lg.jp/dynamic/isan/info/pub/Detail.aspx?c_id=90&id=102
- Asobo Saga, Official Saga Prefecture Tourism Site — Ogi Distillery
- https://www.asobo-saga.jp/spots/detail/3cef06a6-b9b7-4247-bac1-a5123fe4e2f7
- Ogi City Tourism Association — Koyanagi Sake Brewery
- https://www.ogi-kankou.com/koyanagi-sake-brewery.html
Last verified: 2026.09.13
