The newest of the seven, built to guard documents

Where the other storehouses on the Nara estate wear white lime plaster, this one is finished in mortar with a washed-aggregate surface (arai-dashi). Built in 1924 (Taishō 13), the bunko-gura, or document storehouse, is the youngest of the seven annexes registered on the site, and its materials show it. It stands west of the main house, facing east, a compact wooden two-story building of roughly 50 square meters, four ken along the front by three deep, under a hipped roof of copper sheet.

A bunko-gura exists to protect what a household most wanted to keep: records, deeds, and valuables. Everything about this building is shaped by that task. The doorway on the south face, set toward the east end, is fitted with a pair of iron doors that swing open, backed by a single sliding latticed door. The security is deliberate and layered.

The mark of the 1920s

The window treatment tells the same story of protection. On the ground floor the side windows are single-swing; upstairs they are sash windows, and each is shielded on the outside by a shutter. The mortar exterior, unusual among the earthen-walled storehouses beside it, points to the building's date. By the 1920s a wealthy household could reach for newer materials to fireproof and modernize a storehouse without abandoning the form.

That range of dates is exactly what the national register recognized in 2006. The seven annexes span from an 1874 miso storehouse to this 1924 document storehouse, and together they trace half a century of building on one family's grounds. The document storehouse marks the late end of that arc. Reading it beside the older plastered storehouses shows how construction on the estate kept pace with its times.

What to look for on a visit

The former Nara residence is open as an annex of the Akita Prefectural Museum, and admission is free. At the document storehouse, the surface itself is the thing to study: run your eye over the washed-aggregate mortar and compare it with the smooth white plaster of the miso and rice storehouses nearby. Then look at the openings, the twin iron doors and the shuttered upper windows, and the logic of a building made to resist fire and intrusion becomes clear. Museum staff interpret the grounds, so the document storehouse can be placed within the full sequence of the estate's outbuildings, oldest to newest, in a single walk.

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Q&A

QWhat is a bunko-gura?
AA storehouse for documents and valuables. It was built to protect a household's records, deeds, and treasured possessions against fire and theft.
QWhy is it finished in mortar rather than plaster?
AThe mortar with washed-aggregate surface reflects its 1924 date. It is the newest of the seven annexes, and its materials differ from the older earthen-walled storehouses on the site.
QWhat protects the openings?
AThe south doorway has twin swinging iron doors backed by a sliding latticed door. The upper sash windows are each guarded by an external shutter.
QIs admission charged?
ANo. Entry to the annex is free, though special exhibitions at the main museum may carry a separate charge.
QHow do I reach it?
AThe site lies in Kanaashi Koizumi in northern Akita City, within Koizumigata Park, near Oiwake Station on the Ōu and Oga lines.

Basic Information

NameFormer Nara Residence Document Storehouse (Kyū Nara-ke Jūtaku Bunko-gura)
Location8 Kamimae, Koizumi, Kanaashi, Akita City, Akita Prefecture
ClassificationRegistered Tangible Cultural Property (registered 2 March 2006)
Built1924 (Taishō 13)
StructureTwo-story wooden building, copper-sheet roof; building area approx. 50 m²
Count1 building
OwnerAkita Prefecture
Access / hoursOpen as an annex of the Akita Prefectural Museum; admission free. Generally 9:30–16:30 (Apr–Oct), 9:30–16:00 (Nov–Mar); closed Mondays and over the New Year. Confirm current hours before visiting.

References

National Cultural Properties Database (Agency for Cultural Affairs) — Former Nara Residence Document Storehouse
https://kunishitei.bunka.go.jp/bsys/maindetails/101/00005229
Akita Prefectural Museum — Annex, Former Nara Residence
https://www.akihaku.jp/exhibition/permanent/narake/
Akita Museum guide — Former Nara Residence
https://www.akita-museum.com/page.php?serial_no=169
Binokuni Akita Net (Akita Prefecture) — 2005 national registration: Former Nara Residence
https://www.pref.akita.lg.jp/pages/archive/1625

Last verified: 2026.07.04