A Building Asked to Keep Quiet
The Annex of the Hakone Museum of Art (箱根美術館別館, Hakone Bijutsukan Bekkan) is a gallery building in Gora, Hakone Town, Kanagawa Prefecture, completed in 1953 and entered in Japan's national register of Tangible Cultural Properties on 6 March 2024. It sits at the middle of the northern edge of Shinsenkyo (神仙郷), the garden that surrounds the museum.
Construction ran from November 1952 through May 1953, on a stretch of ground that drops sharply between a small house called Hagi-no-ie and the public road above. Building on that slope meant the walls would be visible from the road on one side and from the garden paths on the other, and the design answers that problem by refusing to assert itself. Seen from either direction, the annex declines to become the subject of the view.
The building covers 195 square metres. A single-storey section of reinforced concrete block came first; a two-storey reinforced concrete portion was added on its western side. Records held by the Agency for Cultural Affairs note alterations in the mid-Showa years and again around 1981, without pinning the extension to a single date.
How to Read the Roofs
Two roof forms meet here, and the difference between them is worth a minute of attention because it carries most of the building's argument.
The older single-storey section wears a yosemune roof, hipped on all four sides, with the ridge given a slight upward curve. The two-storey extension carries a hogyo roof instead: pyramidal, four slopes converging on a point rather than a ridge, the form usually reserved in Japanese architecture for small square halls in temple precincts. Both are laid in blue tile. Placing a ridged roof beside a pointed one produces a silhouette that changes as you walk, which is precisely what a building on a garden path should do and precisely what a single continuous roofline would not do.
The entrance sits toward the eastern end of the south face and leads directly into the exhibition room. The Agency's own description characterises the whole as a building given a touch of continental taste to suit the collection it was made to hold, the same reasoning that produced the blue tiles and pale walls of the Main Building a few minutes' walk uphill.
Registration came under the criterion of contributing to the historical landscape of the country, with registration number 14-0346. The Main Building took 14-0345 and the rest house 14-0347 on the same day, three entries describing one composed scene. Shinsenkyo itself had already been designated a national Place of Scenic Beauty on 26 March 2021, recognition of a landscape that Okada Mokichi (岡田茂吉, 1882–1955) laid out between 1944 and 1953.
One detail in the register repays notice. The annex is owned by the Church of World Messianity, while the Main Building and the rest house belong to the Mokichi Okada Association for Art and Culture. Three buildings, one garden, two owners: a reminder that Shinsenkyo began as a religious foundation's sacred ground and became a public museum without ever fully separating the two roles.
What Is Shown Inside
The annex now functions as a room about its founder. Displays cover Okada's life and undertakings alongside calligraphy and paintings from his own brush, which makes it the one place at Shinsenkyo where the person behind the garden and the buildings comes into direct view. Visitors who walk the moss garden first and reach the annex afterward tend to find the sequence more legible in that order.
Okada arrived in Gora in 1944 and worked here through the last year of the war and the difficult years after it. The area had been a resort district since the Meiji period, with villa lots first sold in 1912, Gora Park opening in 1914, and the Hakone Tozan Railway reaching the district in 1919. He bought into an established landscape of holiday houses and rebuilt it into something else.
For visits: the museum closed on 7 May 2026 for renovation and reopens in stages. The annex is scheduled to open on 30 October 2026 with a temporary exhibition room, ahead of the Main Building galleries, which are announced for 23 December 2026. Normal hours are 9:30 to 16:30 from April through November and 9:30 to 16:00 from December through March, last admission thirty minutes before closing, closed Thursdays unless the day is a public holiday. Admission before the closure stood at 1,430 yen for adults and 660 yen for high school and university students, with junior high school students and younger admitted free. Handheld photography without flash is permitted; tripods, monopods, and selfie sticks are not. Food and drink are not allowed indoors. The garden paths involve a good deal of stair climbing and the site is not barrier-free.
From JR Odawara Station the trip takes about an hour by Hakone Tozan Railway to Gora, then one stop on the cable car to Koen-kami. Parking on site is free between 9:00 and 17:00.
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Q&A
- When does the Hakone Museum of Art Annex reopen?
- The announced date is 30 October 2026, with a temporary exhibition room, following the full closure that began on 7 May 2026. The Main Building galleries are scheduled separately for 23 December 2026. Confirm current dates with the museum before travelling.
- What is displayed in the Hakone Museum of Art Annex?
- The annex presents the life and work of the museum's founder, Okada Mokichi (1882–1955), together with calligraphy and paintings he produced himself. The ceramics collection is shown in the Main Building rather than here.
- Why does the Hakone Museum of Art Annex have two different roof shapes?
- The original single-storey section carries a hipped yosemune roof with a slightly upturned ridge, while the two-storey reinforced concrete extension added to its west carries a pyramidal hogyo roof. Both use blue tile. The contrast gives the building a silhouette that shifts as you move along the garden path.
- Who owns the Hakone Museum of Art Annex?
- The register lists the Church of World Messianity as owner of the annex, while the Main Building and rest house are held by the Mokichi Okada Association for Art and Culture. All three stand within the same garden and are run as one museum.
- Is the Hakone Museum of Art Annex accessible for wheelchair users?
- The site is not barrier-free. Shinsenkyo has many steps, there are stairs at the Main Building entrance, and no lift is installed. The museum keeps wheelchairs available but states that visitors cannot tour the grounds unassisted; contact the museum in advance to discuss arrangements.
- How long does it take to reach the Hakone Museum of Art Annex from Odawara?
- Roughly an hour. Take the Hakone Tozan Railway from Odawara to Gora, then the cable car one stop to Koen-kami; the museum entrance is a short walk from the station. Parking is free from 9:00 to 17:00 for those driving.
Basic Information
| Name | Hakone Museum of Art Annex (箱根美術館別館) |
|---|---|
| Location | 1300-85 Gora, Hakone-machi, Ashigarashimo-gun, Kanagawa Prefecture |
| Designation | Registered Tangible Cultural Property (Structure); registration number 14-0346 |
| Year Designated | 6 March 2024 |
| Quantity | 1 building |
| Dimensions | Reinforced concrete, two storeys, with single-storey concrete block section; tiled roof; building area 195 m² |
| Owner | Church of World Messianity |
| Public Access | Normally open as a gallery; closed for renovation from 7 May 2026, with reopening scheduled for 30 October 2026 |
References
- National Cultural Properties Database, Agency for Cultural Affairs — Hakone Museum of Art Annex
- https://kunishitei.bunka.go.jp/heritage/detail/101/00014778
- Cultural Heritage Online — Hakone Museum of Art Annex
- https://online.bunka.go.jp/heritages/detail/594266
- Toho no Hikari — Guide to Shinsenkyo
- https://tohonohikari.or.jp/sacred/shinsenkyo
- Hakone Museum of Art — Galleries (Main Building and Annex)
- https://moaart.or.jp/hakone/map/tenji/
- Hakone Shinsenkyo — official site
- https://shinsenkyo.jp/
Last verified: 2026.08.03