A Brick Fence That Has Outlived an Era
Most visitors to Mino come for paper, not power. Yet a few minutes' walk from Yu-no-Hora Onsenguchi Station, along a quiet bend of the Nagara River, a low brick wall keeps watch over a working piece of Meiji-era industry. This is the outer fence of the Nagaragawa Power Plant — a 1.2-meter line of Flemish-bond brick laid atop a cobblestone base, registered as a Tangible Cultural Property in December 2000.
The fence is short enough to lean over and old enough to have witnessed the arrival of electricity in central Japan. It surrounds a plant that, more than a century after its commissioning in 1910, still feeds power into the regional grid.
How the Wall Came to Be
The Nagaragawa Power Plant was the first hydroelectric station built on the Nagara River. Its origins trace back to Kobayashi Shigemasa, a former retainer of the Iwamura clan in eastern Gifu, who toured the Keage Power Station near Kyoto's Lake Biwa Canal in the 1890s and returned convinced that the Nagara could do the same work. He surveyed the river himself and, in 1897 (Meiji 30), Gifu Hydroelectric secured the official permit for a plant at Tachibana in Suhara Village — present-day Mino City.
The plan stalled. The recession that followed the First Sino-Japanese War froze construction, and the rights eventually passed to Nagoya Electric Light Co. Construction finally moved ahead under the guidance of Noguchi Shitagau, then with Siemens Japan, who specified German turbines and generators. The plant came online in February 1910 — fifteen years after Kobayashi first pictured it. The first current it sent rippled fifty-two kilometers south to Nagoya, where it lit the illuminations of the Kansai Industrial Exhibition then underway.
The outer wall was built as part of the original site enclosure. It has stood, weathered and repointed, ever since.
What Makes It Worth Protecting
The fence is registered as a Tangible Cultural Property (Buildings) of Japan, an entry distinct from the main hall, the front gate, and the seven other related structures of the Nagaragawa complex listed at the same time. The wall earned its own listing for what it preserves about Meiji construction practice at the moment Japan's electrical industry was finding its feet.
Three details matter to the inspectors. The base is laid in rounded river stones, finished with cut band stones that frame the masonry into a clean horizontal register. Above it sits brickwork in Flemish bond — alternating headers and stretchers in each course, a pattern Japanese builders associate with French- and Flemish-trained engineers. Five buttresses are spaced along the run, bracing the wall against lateral pressure. Modest in scale, the construction is unusually deliberate: a working fence built to last.
Together with the main hall, the front gate, and the brick aqueduct bridges further upstream, the wall was also recognized as a Modern Industrial Heritage site by the Ministry of Economy, Trade and Industry in 2007.
Looking Closely on a Visit
The wall is not a stop you make for half an hour. It is something you read while walking the perimeter of the plant grounds. Begin at the front gate — itself a separate listed property, complete with the old corporate emblem of Nagoya Electric Light still cast into the ironwork — and follow the wall along the public road.
Try to spot where the brick courses pass over each buttress. The Flemish-bond pattern, easier to see at a slight angle, gives the wall a checkerboard rhythm that English-bond brickwork (used in many of the plant's aqueducts) does not have. The bricks have been repainted in places to restore their original color and the white pointing lines, which means the wall photographs better than its age would suggest.
The plant grounds themselves are off-limits — this is an active facility — but the main hall, the penstock pipes climbing the hillside, and a preserved set of German-made turbines from the original 1910 installation are visible from the road. Occasional public tours have been organized by Chubu Electric Power as part of the Nagaragawa Onpaku heritage festival; check ahead for current schedules.
What Else Is Nearby
The wall is roughly a four-minute walk from Yu-no-Hora Onsenguchi Station on the Nagaragawa Railway, a small unstaffed platform overlooking the river. Within walking and easy driving distance:
- Yu-no-Hora-dani Aqueduct Bridge — A five-arch brick-and-concrete viaduct from 1910 that carries the plant's water channel, also a registered cultural property, about fifteen minutes' walk upstream.
- Hidani Aqueduct Bridge — A reinforced-concrete bridge faced with red brick, another sister listing along the same water route.
- Suhara Shrine — The local shrine that gave its name to the former Suhara Village in which the plant was built, located downstream along the Nagara River.
- Mino City's Udatsu townscape — Roughly twenty minutes by train or car, this preserved Edo-period merchant district with its distinctive fire walls is a nationally designated Important Preservation District.
- Mino Washi paper workshops — The city's UNESCO-registered handmade paper tradition can be experienced at the Mino Washi Museum and several working ateliers.
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Q&A
- Can I enter the power plant grounds?
- No. The Nagaragawa Power Plant is an active hydroelectric facility, and the interior is off-limits to the general public. The outer wall, front gate, main hall, penstock pipes, and displayed historical turbines can all be viewed from the public road.
- What is Flemish-bond brickwork, and how do I recognize it?
- It is a bricklaying pattern in which each course alternates the long side (stretcher) and short side (header) of the bricks. In Japan it is called Furansu-zumi. It became common in Meiji-era buildings designed by or with French-trained engineers. The wall here is one of the more accessible places to compare it side by side with the English-bond patterns used on the plant's aqueducts.
- Is there an admission fee?
- No. The wall stands along a public road and can be viewed at any time, free of charge. Please remain on the public road and do not attempt to enter the plant grounds.
- Is the plant still in operation?
- Yes. Operated today by Chubu Electric Power Co., the station was refurbished in 1981 and now produces up to 4,800 kilowatts. The 1910 turbines and generators were retired during that refurbishment, but one set is preserved on the grounds.
- Are guided tours of the inside ever offered?
- Public tours have been offered occasionally — most reliably during the Nagaragawa Onpaku festival run by local community groups. Schedules vary and are sometimes affected by maintenance. Check the festival or Chubu Electric Power announcements before traveling specifically for a tour.
Basic Information
| Name | Nagaragawa Power Plant Outer Wall (Nagaragawa Hatsudensho Gaihei) |
|---|---|
| Location | 844-1-1-1-1 Aza Kinosue, Tachibana, Mino City, Gifu Prefecture |
| Designation | Registered Tangible Cultural Property (Buildings), Japan |
| Registration Date | December 4, 2000 |
| Period | Meiji era (completed 1910 with the rest of the plant complex) |
| Structure | Height 1.2 m; Flemish-bond brick wall on a cobblestone base finished with band stones, with five buttresses |
| Owner | Chubu Electric Power Co., Inc. |
| Access | Approximately 4 minutes on foot from Yu-no-Hora Onsenguchi Station, Nagaragawa Railway |
| Admission | Free; exterior viewing from public road only. Plant interior closed to the public. |
| Additional Recognition | Designated a Modern Industrial Heritage site by the Ministry of Economy, Trade and Industry (2007) |
References
- Cultural Heritage Online — Nagaragawa Power Plant Outer Wall
- https://online.bunka.go.jp/heritages/detail/139311
- National Cultural Property Database, Agency for Cultural Affairs
- https://kunishitei.bunka.go.jp/heritage/detail/101/00002249
- Mino City — Nagaragawa Power Plant Main Hall and Eight Other Structures
- https://www.city.mino.gifu.jp/docs/1174.html
- Wikipedia (Japanese) — Nagaragawa Power Plant
- https://ja.wikipedia.org/wiki/長良川発電所
- Mino City Tourism Association
- https://minokanko.com/
Last verified: 2026.05.16