Former Yoshioka Residence Nagayamon: A Gate of 1962, Built from Someone Else's Timber
The nameplate on this gate was painted by the man who lived behind it. Yoshioka Kenji ground gofun, the shell-white pigment of Nihonga, laid it as a ground, and wrote 吉岡 over it in ink. It is a small thing, and it tells you what kind of household this was.
The gate itself is a nagayamon, the long-house gate form once used by rural landowners: a gateway punched through a linear building whose flanking bays held storage or servants' quarters. This one stands southeast of the main house, facing the street, in Shimizu, Higashiyamato. Timber, single-storey, hipped roof of sangawara pantiles, with a building area of 58 square metres. The eaves are carried on segai brackets. The central bay is the gateway; a wicket door opens on the north side. Walls are plastered in the shinkabe manner, with the posts left showing, and the lower panel of the street front is boarded.
Its date, however, is 1962. Not the Meiji era, not the Edo period. The year the Tokyo Olympics were two years away.
This is where the building becomes interesting. When Yoshioka renovated the main house in 1962 and 1963, a master carpenter from nearby Higashimurayama had the salvaged components of a dismantled nagayamon in his possession. Those members were worked into the new gate. Where the original stood, and when, has not been established. The Agency for Cultural Affairs states the fact plainly: built at the present site in 1962 using the timber of a nagayamon from elsewhere.
A Registered Property with No Pedigree
The gate was registered as a Tangible Cultural Property on 2 May 2017, number 13-0377, in the eighty-sixth round, along with the main house, the storehouse and the inner gate. The criterion is that it contributes to the historic landscape of the nation.
Consider how little of the usual argument applies. The building is not old by the standards of designated architecture. Its parts have no documented origin. It was assembled by a painter and a jobbing carpenter, not by a lineage of temple builders. Under the designation system that produces National Treasures and Important Cultural Properties, none of this would get a hearing.
The registration system, created in 1996, was written for a different question. It does not ask whether a building is a masterpiece. It asks whether it holds a place in the landscape. This gate does. The Agency's wording is that it lends dignity to the composition of the residence, and anyone who has walked up the street and met it will recognise the judgement as accurate rather than generous.
There is a second argument, unstated in the national record but plain in the local one. Higashiyamato City lists the property partly because Yoshioka worked here for close to half a century, and because the plot preserves the look of a wealthy farming household of a type that has thinned out across the Tama region. The gate belongs to that composition. Remove it and the case for the rest weakens.
Details Worth Stopping For
Look at the doors. Eight nyūbyō are set into them, four on each leaf and on the wicket: domed decorative studs, named for their resemblance to a breast, traditionally read as a wish for descendants. They soften a form that is otherwise defensive in origin.
Then look down. About 150 granite setts pave the ground here, laid in the 1970s. They came from the Tokyo tramway. When the city tore up its streetcar network, the stones that had held the rails were dispersed, and a number of them ended up under this gate. Two histories of the same city, one rural and one metropolitan, meeting at the threshold.
The room to the north of the gateway carries the heaviest story. When Yoshioka was working on the reproduction of the Kondō wall paintings at Hōryū-ji, he used it as a second studio. Students from Tokyo University of the Arts who assisted him are said to have eaten and slept in this room when the work ran late. It is a tatami room in a farmyard gate on the western edge of Tokyo, and for a period it was an annexe of one of the most consequential conservation projects in modern Japanese art.
The gate faces a public street, so the exterior can be seen from outside at any time. The interior, and the property behind it, are another matter: Higashiyamato City opens the site for a few days in spring and again in autumn, admission free. Musashi-Yamato Station on the Seibu Tamako Line is about five minutes on foot, and the local circular bus stops closer still.
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Q&A
- What is a nagayamon?
- A gate formed by opening a passage through a long, low building. The bays on either side served as storage, stabling or quarters. The form was used by samurai households and, later, by prosperous farming families, and it signalled standing as much as it provided security.
- If it was built in 1962, why is it a cultural property?
- Because registration judges a building's role in the historic landscape rather than its age alone. The gate uses salvaged timber from an older nagayamon and completes the composition of a farming estate that has become rare in the Tama region. The registration system, unlike designation, is built to accommodate cases like this.
- Where did the salvaged timber come from?
- A master carpenter from Higashimurayama held the members of a dismantled nagayamon and supplied them for the 1962 construction. The original location and date of that gate have not been identified, and local records acknowledge the gap openly.
- Can I see the gate without waiting for an open day?
- The gate stands on a public street, so its street front is visible at any time. The wicket, the nameplate and the setts can all be seen from outside. Going through it, and seeing the north room, requires one of the two annual openings.
- What are the studs on the doors for?
- They are nyūbyō, decorative metal studs used on gate doors. The name refers to their rounded, breast-like profile, and they are conventionally understood as a wish for the family's continuation. Eight are fitted here across the two leaves and the wicket.
Basic Information
| Name | Former Yoshioka Residence Nagayamon (旧吉岡家住宅長屋門) |
|---|---|
| Location | 779-5 Shimizu 3-chōme, Higashiyamato, Tokyo |
| Category | Registered Tangible Cultural Property (Structure) |
| Registration date | 2 May 2017 (86th round); registration no. 13-0377 |
| Criterion | Contributing to the historic landscape of the nation |
| Count | 1 building |
| Date | 1962 (Shōwa 37), using salvaged members of an earlier nagayamon |
| Structure | Timber, single-storey, hipped sangawara-tiled roof with segai eaves; building area 58 m² |
| Owner | Higashiyamato City |
| Access | Approx. 5 min. walk from Musashi-Yamato Station, Seibu Tamako Line |
| Opening | Street front visible year-round; interior open only during spring and autumn openings, admission free |
| Enquiries | Higashiyamato City Local Museum, Tel. 042-567-4800 |
References
- 国指定文化財等データベース「旧吉岡家住宅長屋門」（文化庁）
- https://kunishitei.bunka.go.jp/bsys/maindetails/101/00011483
- 文化遺産オンライン「旧吉岡家住宅長屋門」
- https://bunka.nii.ac.jp/heritages/detail/300459
- 国登録有形文化財 旧吉岡家住宅（東大和市公式ホームページ）
- https://www.city.higashiyamato.lg.jp/bunkasports/museum/1006099/1006100.html
- 旧吉岡家住宅（国登録有形文化財）｜東大和の博物館・文化財情報
- https://higashiyamato.net/ecomuseum/yukeibunkazai
Last verified: 2026.07.15