A Kasuga-Style Hall of 1556 in Omachi
The Nyakuichi Oji Shrine Main Hall (若一王子神社本殿) is a shrine hall in the Kasuga style of 1556 in Omachi, Omachi City, Nagano Prefecture, and was designated an Important Cultural Property on January 19, 1931 (Agency for Cultural Affairs).
The Agency records a one-bay Kasuga-style hall with corner rafters, roofed in cypress bark, designated together with a ridge tablet; designation number 00875.
The 1931 date in the Agency record is that of its designation under the former law.
A Shrine Brought from Kumano by the Nishina
The main hall of Nyakuichi Oji Shrine is a one-bay Kasuga-style hall with corner rafters, roofed in cypress bark, dated 1556 and designated together with a ridge tablet (Agency for Cultural Affairs).
According to the Nagano Prefecture designation commentary, the shrine stands at the north end of central Omachi. In the late Heian period the Nishina, the local warrior family, brought the deity Nyakuichi Oji here from Kumano Nachi; known thereafter as Nyakuichi Oji Gongen, it drew worship from across the region as a shrine where Shinto and Buddhism were joined. In the precincts a Kannon hall of 1706 and a three-storey pagoda survive, both designated by Nagano Prefecture.
Why It Is an Important Cultural Property
The Agency record has no commentary; the structure and date set out what was designated. It is a Kasuga-style hall of the late Muromachi period, dated to 1556 (Agency for Cultural Affairs).
What to Look For
Look at the Kasuga-style roof of cypress bark and the corner rafters. The precincts also hold the prefecture-designated Kannon hall and pagoda (Nagano Prefecture).
Visiting
It is owned by Nyakuichi Oji Shrine (Agency for Cultural Affairs). Nagano Prefecture notes that the July festival features horseback archery by children, rare anywhere in Japan. No official visiting information was found.
Q&A
- When was the main hall built?
- In 1556 (Agency for Cultural Affairs).
- What style is it?
- A one-bay Kasuga-style hall with corner rafters, roofed in cypress bark.
- How did the shrine begin?
- The Nishina family brought its deity from Kumano Nachi in the late Heian period (Nagano Prefecture).
- What happens at the festival?
- Children perform horseback archery at the July festival (Nagano Prefecture).
- When was the Nyakuichi Oji Shrine Main Hall designated an Important Cultural Property?
- On January 19, 1931 (Agency for Cultural Affairs).
Basic Information
| Name | Nyakuichi Oji Shrine Main Hall (若一王子神社本殿) |
|---|---|
| Location | 2097 Omachi, Omachi City, Nagano Prefecture |
| Designation | Important Cultural Property (Structure) |
| Year Designated | Designated 1931/01/19 (Showa 6) |
| Quantity | 1 building (with 1 ridge tablet) |
| Dimensions | One-bay Kasuga style with corner rafters, cypress-bark roof |
| Owner | Nyakuichi Oji Shrine |
| Public Access | No official visiting information |
References
- Nyakuichi Oji Shrine Main Hall (Database of National Cultural Properties, Agency for Cultural Affairs)
- https://kunishitei.bunka.go.jp/heritage/detail/102/956
- Nyakuichi Oji Shrine Kannon Hall and Shrine Cabinet (Cultural Heritage Online, Nagano Prefecture designation)
- https://online.bunka.go.jp/heritages/detail/196788
- Tourist resources of the Northern Alps area (Nagano Prefecture)
- https://www.pref.nagano.lg.jp/kankoshin/omotenashi/documents/kitaalps-2.pdf
Last verified: 2026.10.22