The Office That Ran Ashikaga's First Waterworks
Suidoyama Memorial Hall (緑町配水場水道山記念館, Midoricho Haisuijo Suidoyama Kinenkan), the former administrative office of the Midoricho Distribution Plant at 1-3780 Midoricho in Ashikaga City, Tochigi Prefecture, was completed in 1930 and entered on the national register of Tangible Cultural Properties on 2 March 2006. Its register number is 09-0133.
The plant occupies the crown of a low hill immediately north of Ashikaga Park, a rise that residents simply call Suidoyama, the waterworks mountain. The old office stands at the northeast corner of the grounds and faces east, which is not an accident of planning. From the front of the building the ground drops away toward the Watarase River and the roofs of central Ashikaga, the district the plant was built to supply.
What you see is a single-storey timber building under a gabled roof of brown glazed French tiles, with two triangular dormers breaking the slope. Dark exposed timbers are set against pale render in a half-timbered manner. The walls are finished in washed-out mortar aggregate, and the specification changes partway up: fine chippings above, pea gravel across the lower dado band, so the surface reads as two different textures depending on where the light falls. Windows are wooden-framed and glazed, with transoms above, the joinery finished in paint rather than left bare.
Inside, the plan steps sideways rather than running straight back. The Japanese term is gankogata, a staggered arrangement likened to geese in flight. An office sits beside the entrance, a reception room behind it, and beyond that the room that gives the building its oddity.
A Guest Room Built for One Visit
The northeast corner of the building holds a kihinshitsu, a room reserved for distinguished guests. It was added in 1934, four years after the rest of the building, to receive the Emperor during an imperial progress through the region. Ashikaga City records the addition explicitly, and the Agency for Cultural Affairs entry carries the same double date: 1930, with an extension in 1934.
The distinction survives in the finishes. Throughout the building the floors are carpeted and the ceilings plastered, with vertical boarding to the lower walls of the ordinary rooms. In the guest room the boarding is dropped and both walls and ceiling are plastered plain, a quieter and more formal treatment. Elsewhere on the plan are the night duty room, a small kitchen for boiling water, a bathroom and a lavatory, the ordinary infrastructure of a facility that had to be staffed around the clock.
The building was registered under the first of the three national criteria, the one covering structures that contribute to the historic landscape of the country. That framing matters here. Ashikaga did not register these buildings as monuments of high architecture but as things the town has lived beside. In May 1985 the hall had already been picked for the Kindai Suido Hyakusen, a selection of one hundred modern waterworks sites organised by the Japan Water Works Newspaper, listed for its environmental and scenic value.
Visiting, and What Is Actually Open
The interior is normally closed. Ashikaga City's cultural properties page states plainly that the site is not routinely open to visitors, and the plant is still working: water pumped up from the Imafuku Purification Plant, on the flat ground to the west, arrives here and flows out to the city by gravity. Occasional openings do happen, usually announced by the municipal government as part of its cultural property special-viewing programme, and enquiries go to the Cultural Affairs Division of the Ashikaga Board of Education. There is no published rule on photography, so anyone attending an opening should ask on the day.
The hall holds an exhibition of photographs tracing the waterworks from its founding through the fifth expansion project, which is the clearest account available of how a provincial silk town built itself a modern water supply. Ashikaga's population stood at about 43,000 when construction began; the first phase was designed for 55,000 and the second for 80,000.
Getting there is straightforward on foot for anyone who does not mind a climb. JR Ashikaga Station and Tobu Ashikagashi Station both sit south of the river, roughly half an hour's walk away, or under ten minutes by taxi. Yakumo Shrine and the Soun Art Museum are close by, and Ashikaga Park itself, with its cluster of ancient burial mounds, adjoins the plant on the south. Two other registered structures share the same grounds, the distribution reservoir and the junction well, and a fourth, the measuring room, and the pump room at Imafuku completes the group of five.
- 📍 Plan Your Visit to Tochigi
- Find tours, activities & transport passes near Midoricho Distribution Plant Suidoyama Memorial Hall (Former Office)
- [ Nikko Toshogu Shrine & Kegon Falls Day Trip ]
Q&A
- Can visitors go inside Suidoyama Memorial Hall at the Midoricho Distribution Plant?
- Not as a rule. Ashikaga City lists the site as normally closed, since the distribution plant remains in service. The building has been opened on special occasions, so check the city's cultural properties pages or contact the Cultural Affairs Division of the Board of Education before making the trip.
- Where is Suidoyama Memorial Hall and how do I reach it from Ashikaga Station?
- The address is 1-3780 Midoricho, Ashikaga City, Tochigi Prefecture, on the hill directly north of Ashikaga Park. From JR Ashikaga Station or Tobu Ashikagashi Station it is around thirty minutes on foot, uphill toward the end, or well under ten minutes by taxi.
- Why does Suidoyama Memorial Hall have a room built for imperial guests?
- The kihinshitsu at the northeast corner was added in 1934 for an imperial visit, four years after the office was finished. Its plainer plastered walls and ceiling, without the vertical boarding used elsewhere, still mark it out from the working rooms.
- When was Suidoyama Memorial Hall built and when was it registered?
- The office was completed in 1930, with the guest room added in 1934. Registration as a national Tangible Cultural Property took effect on 2 March 2006 and was gazetted on 23 March that year, under register number 09-0133.
- What other cultural properties stand at the Midoricho Distribution Plant?
- Three more registered structures share the site: the distribution reservoir, the junction well and the small measuring room. Together with the pump room at the Imafuku Purification Plant they form a group of five registered on the same day in 2006.
Basic Information
| Name | Midoricho Distribution Plant Suidoyama Memorial Hall, Former Office (緑町配水場水道山記念館（旧事務所）) |
|---|---|
| Location | 1-3780 Midoricho, Ashikaga City, Tochigi Prefecture |
| Designation | Registered Tangible Cultural Property (Structure), register number 09-0133 |
| Year Designated | Registered 2 March 2006, gazetted 23 March 2006 |
| Quantity | 1 building |
| Dimensions | Single-storey timber construction, tiled roof, building area 200 m² (Ashikaga City gives 199.58 m²); completed 1930, extended 1934 |
| Owner | Ashikaga City waterworks utility |
| Public Access | Normally closed; opened occasionally by the city |
References
- Agency for Cultural Affairs — National Cultural Properties Database, Midoricho Haisuijo Suidoyama Kinenkan
- https://kunishitei.bunka.go.jp/heritage/detail/101/00005238
- Cultural Heritage Online — Midoricho Haisuijo Suidoyama Kinenkan
- https://online.bunka.go.jp/heritages/detail/181456
- Ashikaga City — Registered Tangible Cultural Properties among the city's waterworks facilities
- https://www.city.ashikaga.tochigi.jp/urban/000070/000943/p003271.html
- Ashikaga City — Midoricho Distribution Plant: memorial hall, reservoir, junction well and measuring room
- https://www.city.ashikaga.tochigi.jp/education/000029/000169/000627/p000937.html
- Ashikaga City — Outline of waterworks facilities
- https://www.city.ashikaga.tochigi.jp/living/000021/000142/000585/p003291.html
Last verified: 2026.08.05