The Smallest Registered Building at Nakayama Shrine
Nakayama Shrine Heiden (中山神社幣殿, Nakayama-jinja Heiden, the shrine also written Nakayama Jinja) is a single-storey wooden offering hall in Ichinomiya, Tsuyama City, Okayama Prefecture, completed in 1922 and listed as a Registered Tangible Cultural Property (toroku yukei bunkazai) on 24 June 2021. Its registration number is 33-0348 and its building area is 22 square metres.
A heiden is the hall in which heihaku, offerings of cloth and paper presented to the deity, are set out. It occupies the ground between the worship hall where visitors stand and the sanctuary where the deity resides, and it is generally the least noticed of the three. At Nakayama Shrine it is smaller than the worship hall by a factor of nearly four.
Size did not keep it off the register. It went up in the same 1922 campaign as the worship hall, alongside repairs to the honden of 1559, and the same designer signed both: Egawa Saburohachi (江川三郎八, 1860 to 1939), then a building engineer with the Okayama prefectural government. The honden behind it has been an Important Cultural Property since 17 April 1914, and Nakayama Shrine itself is the ichinomiya, or first-ranked shrine, of the old province of Mimasaka.
One Bay Carrying Three Bays' Worth of Span
On paper the plan is as simple as a plan can be: one bay by one bay. The reality is stranger. The Agency for Cultural Affairs records that along its length the single bay measures what would ordinarily be divided into three, the whole span carried on a kashiranuki of unusual depth, the horizontal tie beam that runs through the pillar heads.
That is a structural decision, not a decorative one. Egawa had trained as a miyadaiku, a shrine and temple carpenter, before entering the Fukushima prefectural service in 1887 and transferring to Okayama in 1902. His public reputation came from timber trusses, the system nicknamed the Egawa style after it produced the column-free assembly hall of the former Senkyo Elementary School in Maniwa City, built in 1907 and now an Important Cultural Property. Here he had no truss, only joinery, and the problem was the same one: hold up a roof and take the posts out of the middle.
The bracket sets are daito-hijiki, the simplest of the standard types, a large bearing block with a single arm above it. The roof is kirizuma, a plain gable, laid in hiwadabuki cypress bark to match the worship hall and the sanctuary. Restraint on this scale reads as deliberate.
Looking Up, and Looking Through
Every bay of the heiden stands open. There are no doors and no walls between the pillars, only a koran, a low railing, running around the perimeter. The result is that the building can be seen through rather than merely at, and on a clear morning the sanctuary roof shows between its posts.
The ceiling is the piece to seek out. It is a funazoko-tenjo, a shallow ceiling curved like the inside of a hull, and its boards are worked with the same fukiyose-daruki rhythm found on the worship hall eaves, rafters set in close pairs rather than at even intervals. The Agency's commentary notes the resemblance to the heiden of Kiyama Shrine, another Egawa design, and treats the pairing as evidence of a personal manner rather than a regional convention.
Because the structure is open on all four sides, the ceiling can be studied from the approach without entering. The precincts of Nakayama Shrine are open to visitors and no admission charge is published; the halls are appreciated from outside, the honden interior is not opened for general viewing, and questions about photographing the interiors are best put to the shrine office beside the worship hall. Parking for around 500 vehicles is provided.
JR Tsuyama Station lies about 5 kilometres to the south. Okayama Prefecture's tourism information gives a bus of roughly 20 minutes towards Nishitanabe, alighting at Ichinomiya Hoikusho-mae, and about 15 minutes by car from the Inokusho interchange on the Chugoku Expressway. The heiden comes into full use on 29 April and 3 November, the shrine's spring and autumn festivals.
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Q&A
- What is Nakayama Shrine Heiden, and where is it?
- It is the offering hall of Nakayama Shrine at 695-2 Ichinomiya, Tsuyama City, Okayama Prefecture, standing between the worship hall and the main sanctuary. A heiden is where offerings to the deity are presented. This one was completed in 1922 and has a floor area of 22 square metres.
- Is Nakayama Shrine Heiden a National Treasure or an Important Cultural Property?
- Neither. It is a Registered Tangible Cultural Property, registered on 24 June 2021 under number 33-0348. The Important Cultural Property at this shrine is the main sanctuary of 1559, designated in 1914.
- What is unusual about the structure of Nakayama Shrine Heiden?
- Its plan is a single bay in each direction, but along its length that one bay spans what would normally be three, the load carried on an exceptionally deep tie beam through the pillar heads. The bracketing is the simple daito-hijiki type and the gable roof is laid in cypress bark.
- Can visitors see inside Nakayama Shrine Heiden?
- The building has no walls or doors between its pillars, so its curved boat-bottom ceiling can be seen from outside. Entry is not part of ordinary worship, and no admission fee is published for visiting the precincts.
- How do I reach Nakayama Shrine Heiden from JR Tsuyama Station?
- The shrine is about 5 kilometres north of the station. Prefectural tourism information lists a bus of roughly 20 minutes towards Nishitanabe with a stop at Ichinomiya Hoikusho-mae, and about 15 minutes by car from the Inokusho interchange. On-site parking holds about 500 vehicles.
Basic Information
| Name | Nakayama Shrine Heiden (中山神社幣殿) |
|---|---|
| Location | 695-2 Ichinomiya, Tsuyama City, Okayama Prefecture |
| Designation | Registered Tangible Cultural Property (Structure), registration no. 33-0348 |
| Year Designated | Registered 24 June 2021 |
| Quantity | 1 building |
| Dimensions | Single-storey timber structure, cypress-bark roof, building area 22 square metres |
| Owner | Nakayama Shrine (religious corporation) |
| Public Access | Precincts open to visitors; open-sided structure viewed from outside. No admission fee published. Parking for about 500 vehicles |
References
- National Cultural Properties Database, Agency for Cultural Affairs — Nakayama Jinja Heiden
- https://kunishitei.bunka.go.jp/heritage/detail/101/00013890
- National Cultural Properties Database, Agency for Cultural Affairs — Nakayama Jinja Haiden
- https://kunishitei.bunka.go.jp/heritage/detail/101/00013889
- Cultural Heritage Online — Nakayama Jinja Honden
- https://online.bunka.go.jp/heritages/detail/148221
- Okayama Prefectural Association of Shinto Shrines — Nakayama Jinja
- https://www.okayama-jinjacho.or.jp/search/16978/
- Okayama Kanko Web — Nakayama Jinja
- https://www.okayama-kanko.jp/spot/detail_10532.html
Last verified: 2026.08.06