The Smallest of the Seven
The Tozanso Storage Shed (東山荘物置, Tōzansō Monooki) is a two-story outbuilding of 1933 standing southwest of the main house on the Tozanso estate in Kasugacho, Atami City, Shizuoka Prefecture, and it joined the national register as a Registered Tangible Cultural Property (structure) on August 1, 2016. Its ridge runs east to west. At 17 square meters it is the smallest of the seven buildings on the site.
It was put up for Ishii Kengo of Dai-Ichi Bank at the same time as the main gate, main house and detached wing, all by the contractor Shimizu-gumi. Through two changes of ownership, to Yamashita Kamesaburo and then to Okada Mokichi, its job barely changed. It has been a place to keep things for more than ninety years.
The frame is timber, but part of the structure is reinforced concrete. Bringing concrete into a service building in 1933 says something about how the villa was built: the technology of the day was used even where no guest would ever see it.
Why It Was Registered
The Tozanso Storage Shed carries registration number 22-0229 under the criterion of contributing to the historic landscape of the nation. The Agency for Cultural Affairs describes it as an ancillary facility that conveys how a villa of this kind was maintained.
When villa architecture survives into heritage status, the parts that vanish first are rarely the formal rooms. Sheds, stores and service buildings go, and the reception wings remain. Registering this one alongside the main house, detached wing, annex, tea house, storehouse and main gate reflects the fact that the estate survives as a complete working arrangement, and that is why a 17-square-meter outbuilding sits on the national register at all.
A Half-Sunken Floor and a Room Above
The Tozanso Storage Shed takes advantage of the fall of the ground. Its lower floor is set half into the slope and holds a single Doma, an earth-floored room, used for storage. Above it sits a matted room, its northern side carried out on projecting purlins. This is not simply a shed: the upper level was made for people to occupy.
The roof is a hipped form in Sangawara-buki, pantile. According to the Tozanso Preservation Society, the tiles are the same kiln-varied type used on the main house. Matching an outbuilding's roof to that of the principal residence keeps the whole site reading as one composition.
The walls are finished in Shitami-itabari, overlapping horizontal boards, held by thin notched battens in the sasarako manner. It is a wall type long favored in wet climates. The entrance is on the western gable end.
Detail was not skipped here either. The door on the upper floor carries a carved bat motif, evidence that even the joinery of a storage building was thought about. It is worth looking up for on a visit.
Visiting
The exterior of the Tozanso Storage Shed can be seen on the guided estate tour that the Tozanso Preservation Society runs by advance booking. Tours are held on the third Sunday of most months, or the fourth Sunday in March, May, August and November, at 11:00 a.m. and 1:30 p.m., ten people per session.
Admission is 1,000 yen, paid at reception on the day. A guide leads the visit, which lasts about an hour. Booking is by email to the society with name, contact details, preferred date and time, and party size. The estate is closed in July and December in 2026.
Whether the interior can be entered is not stated in the published information, and no photography policy is given, so ask the guide about both.
The walk from JR Atami Station takes about ten minutes to the southeast and uphill. There is no parking on site; paid car parks in town are the alternative. Sitting southwest of the main house, the shed usually comes on the route immediately after the residence.
Q&A
- Can I see the Tozanso Storage Shed, and what does it cost?
- The exterior is included in the pre-booked estate tour, held on the third Sunday of most months (fourth Sunday in March, May, August and November) at 11:00 a.m. and 1:30 p.m., ten people each. Admission is 1,000 yen for a guided visit of about an hour. Closed in July and December in 2026.
- Why is a building as small as the Tozanso Storage Shed a Registered Tangible Cultural Property?
- Because it records how the villa was maintained. The estate keeps not only its reception buildings but its service structures too, which is unusual, and the register recognizes that completeness.
- How is the Tozanso Storage Shed built?
- It is two stories, timber with some reinforced concrete, roofed in tile, covering 17 square meters. The lower floor is a half-sunken earth-floored store cut into the slope; the upper floor is a matted room.
- What is the board cladding on the Tozanso Storage Shed?
- It is overlapping horizontal boarding secured by thin notched battens, a wall finish common in rainy regions of Japan. The doorway is set in the western gable end.
- When was the Tozanso Storage Shed built and registered?
- It was built in 1933 as an outbuilding of Ishii Kengo's villa and registered on August 1, 2016, as number 22-0229.
Basic Information
| Name | Tozanso Storage Shed |
|---|---|
| Location | 1712-6 Kasugacho, Atami City, Shizuoka Prefecture, and adjoining lots |
| Designation | Registered Tangible Cultural Property (Structure) |
| Year Designated | Registered on August 1, 2016 (Heisei 28) |
| Quantity | 1 building |
| Dimensions | 2-story timber structure partly in reinforced concrete, tiled roof, building area 17 square meters |
| Owner | Church of World Messianity |
| Public Access | Exterior viewable on the reserved estate tour (admission 1,000 yen) |
References
- National Designated Cultural Property Database, Tozanso Storage Shed (Agency for Cultural Affairs)
- https://kunishitei.bunka.go.jp/heritage/detail/101/00011144
- Tozanso, About the Buildings (Tozanso Preservation Society)
- https://touzansou.jp/about
- Tozanso, Visit Booking (Tozanso Preservation Society)
- https://touzansou.jp/application
- Cultural Properties (Church of World Messianity)
- https://sekaikyuuseikyou.or.jp/culture
Last verified: 2026.09.09