The Oldest Hall in Gifu Prefecture
Yakushido Hall (薬師堂), commonly called Kokaya Yakushido (小萱薬師堂) after the district where it stands, is a Buddhist hall in Kokaya, Kamioka Town, Hida City, Gifu Prefecture, built in the early Muromachi period, and designated an Important Cultural Property on 28 December 1971.
Its formal name is Zuiganji Anrakuin Yakushido. The registered designation name is simply Yakushido, without qualifier, which makes the building easy to confuse with the many other halls of that name across Japan. Locally it goes by Kokaya Yakushi or Neze Yakushi.
It is a small square hall, three bays on each side. Recorded dimensions give the frontage as 6.686 meters and the depth as 6.666 meters. The roof is hipped and gabled, covered in kokerabuki, thin wooden shingles laid in overlapping courses and pinned with bamboo nails. Local accounts hold it to be the oldest hall building in Gifu Prefecture.
The ownership arrangement takes some explaining. Zuiganji, a Rinzai temple of the Myoshinji branch, is the registered owner, but the hall sits on a detached parcel more than four kilometers from the temple itself. Zuiganji was the funerary temple of the Ema clan, who ruled northern Hida in the medieval period. The hall originally belonged to Iozan Anrakuin, a Buddhist temple attached to the Hakusan Shrine of Kokaya. When Anrakuin ceased to exist, only the Yakushido survived, and Zuiganji has managed it since 1942.
What the 1974 Repair Established
For a long time the date of this hall was uncertain. Inside it are votive discs, mishotai, bearing images of the Yakushi triad and the twelve heavenly generals, and one carries an inscription dated 1299. On that evidence some argued the hall itself went back to the Kamakura period. Others placed the style at mid-Muromachi or earlier without fixing a date.
A dismantling repair settled the question. Work began on 1 November 1974 and ran for thirteen months. Examination of the members during dismantling showed that the standing building had been rebuilt in the early Muromachi period reusing timbers from a Kamakura-period predecessor. The Agency for Cultural Affairs now records the period as early Muromachi, within a range of 1333 to 1392. Some sources describe the rebuilding as late Nanbokucho or early Muromachi, which reflects the same finding in different terms.
The Agency's assessment is brief. It describes a square three-bay hall using boat-shaped brackets and single-tier eaves, notes that the interior was altered in the mid-Edo period while the outer framing and rafters remain old, and records that the front and side central bays originally held doorways with boarded walls in the flanking bays.
Later alterations were extensive before the repair reversed them. Columns were replaced and the bay fittings changed in the late Muromachi period, and major renovations in 1727 and 1754 obscured the original form further. The building now stands restored to its early Muromachi appearance. A ridge plaque is included in the designation as an attached item.
Looking at the Building
What strikes most visitors first is the roofline. The hall is plain, without carving or paint, and its interest lies entirely in curve and proportion. The shingled roof sweeps down and lifts at the corners, and the relationship between the square plan and the height of the elevation is unusually well judged for a village hall.
The columns are round, not squared. Each carries a funahijiki, a boat-shaped bracket cut in a single piece, and nothing more. This is the simplest of all bracket types, and using it throughout keeps the eaves low and the silhouette quiet.
The eaves are single-tier with widely spaced rafters, and the rafters turn up sharply toward the corners. That upward curve carries much of the visual work. Walk to a corner and sight along the eave line to see it properly.
The outer walls are of vertical boarding in exposed-post construction, so the frame reads clearly from outside. Carpenters of the Hida region, known historically as Hida no takumi and conscripted for temple building in the ancient capitals, are credited with the work, and chisel marks attributed to them survive on the timbers.
The hall once drew crowds for a festival called Neze Yakushi, described in local records as a rite in which men and women slept together in the hall through the night. The Yakushi here was also venerated for efficacy in sericulture, a major concern in the mountain villages of Hida.
The hall stands in the open in the Kokaya district and can be seen and photographed from outside at any time without charge. The interior is not on regular display; anyone wishing to see inside should contact Zuiganji, bearing in mind the temple is several kilometers away. The Hida Kamioka Koko Mae bus stop is roughly one minute on foot. Kamioka Town is better known today for the Kamioka mine and the neutrino observatories built in it, and the Kamiokalabo science museum in town covers that history.
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Q&A
- Can visitors see Kokaya Yakushido, and is there an admission fee?
- The hall stands in the open in the Kokaya district and can be viewed and photographed from outside at any hour without charge. The interior is not on regular display. Anyone wishing to see inside should contact Zuiganji, which manages the hall from a location several kilometers away.
- How old is Kokaya Yakushido, and how was the date determined?
- The Agency for Cultural Affairs dates it to the early Muromachi period, between 1333 and 1392. The dismantling repair of 1974 to 1975 showed that the standing hall was rebuilt in that period using timbers salvaged from a Kamakura-period predecessor. Votive discs inside bearing an inscription of 1299 had previously led some to argue for a Kamakura date for the building itself.
- Why is Kokaya Yakushido owned by Zuiganji when the two are far apart?
- The hall originally belonged to Iozan Anrakuin, a Buddhist temple attached to the Hakusan Shrine of Kokaya. When Anrakuin was abolished, only the Yakushido remained, and Zuiganji has managed it as a detached holding since 1942. The two sites lie more than four kilometers apart.
- What should visitors look at in the architecture of Kokaya Yakushido?
- The building carries no carving or paint, so attention goes to line and proportion. Round columns each take a single boat-shaped bracket, the eaves are single-tier with widely spaced rafters that turn up strongly at the corners, and the shingled hipped-and-gabled roof shows a marked curve. Chisel marks attributed to Hida carpenters survive on the timbers.
- How do I reach Kokaya Yakushido in Hida City?
- The Hida Kamioka Koko Mae bus stop is about one minute away on foot. The hall stands in the Kokaya district of Kamioka Town. Kamioka is also home to the Kamiokalabo science museum, which covers the underground neutrino observatories built in the former mine.
Basic Information
| Name | Yakushido Hall (薬師堂), commonly Kokaya Yakushido (小萱薬師堂); formally Zuiganji Anrakuin Yakushido |
|---|---|
| Location | Kokaya, Kamioka Town, Hida City, Gifu Prefecture |
| Designation | Important Cultural Property (designation no. 01838) |
| Year Designated | 28 December 1971 |
| Quantity | 1 building (with 1 ridge plaque as an attached item) |
| Dimensions | Three bays square; frontage approx. 6.686 m, depth approx. 6.666 m; single story, hipped-and-gabled roof, wooden shingles |
| Owner | Zuiganji Temple |
| Public Access | Exterior visible and photographable at all hours, no charge; interior not on regular display, advance contact with Zuiganji required |
References
- National Cultural Properties Database, Agency for Cultural Affairs: Yakushido
- https://kunishitei.bunka.go.jp/bsys/maindetails/102/1110
- Gifu Prefectural Government, Division of Cultural Heritage: Yakushido
- https://www.pref.gifu.lg.jp/page/353189.html
- Cultural Heritage Online: Yakushido
- https://online.bunka.go.jp/heritages/detail/193770
- Hida Thirty-Three Kannon Pilgrimage: No. 27 Zuiganji
- https://hidakannon.jp/about/gl_cate_3/20201025-592/
Last verified: 2026.08.06