Smaller Than the State Railways' Smallest

The Kominato Railway Kazusa Yamada Station Building (小湊鉄道上総山田駅本屋) is a single-storey timber station built around 1925 in the Isogaya district of Ichihara City, Chiba Prefecture; altered in 1932, 1965 and 1985, it was registered as a Registered Tangible Cultural Property on May 2, 2017.

Kazusa Yamada lies about 3 kilometers south of Ama-Ariki, and like Ama-Ariki it follows the standard design the Kominato Railway used when the line opened.

Nine Meters by Four and a Half

According to the Agency for Cultural Affairs, the Kominato Railway Kazusa Yamada Station Building is single-storey timber with a tiled roof and a building area of 64 square meters. Its basic office-and-waiting-room block measures 9 meters by 4.5 meters.

The agency notes that this is more compact than even the smallest standard station drawn up by the contemporary state railways. A small private company took the national template and trimmed it to what it could afford.

Three later rounds of work, in 1932, 1965 and 1985, added to that core. Trying to spot where the original box ends and the additions begin is part of the fun.

Seeing It

The Kominato Railway Kazusa Yamada Station Building remains in use, and the waiting room is open to passengers. From the platform, the 9-meter frontage of the original block is easy to take in at a glance.

The station is unstaffed but has a ticket machine. The registered First and Second Shibanoshita bridges lie in the fields just to the south. As of September 25, 2026, trains between Goi and Kazusa Ushiku were running normally.

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Q&A

QWhen was the Kominato Railway Kazusa Yamada Station Building built?
AAround 1925, with alterations in 1932, 1965 and 1985.
QHow big is the Kazusa Yamada Station Building?
AIts building area is 64 square meters; the original block is 9 meters by 4.5 meters.
QWhy is the Kominato Railway Kazusa Yamada Station Building significant?
AIt is a standard opening-era Kominato station, built smaller than the smallest standard design of the state railways of the time.
QCan I go inside Kazusa Yamada Station?
AYes. It is a working station and the waiting room is open to passengers.
QAre there other registered structures near Kazusa Yamada Station?
AYes, the First and Second Shibanoshita bridges are just south of the station.

Basic Information

NameKominato Railway Kazusa Yamada Station Building (小湊鉄道上総山田駅本屋)
Location2079-3 Nishihigoe, Isogaya, Ichihara City, Chiba Prefecture
DesignationRegistered Tangible Cultural Property (Structure)
Year DesignatedRegistered 2017/5/2 (Heisei 29)
Quantity1 structure
DimensionsSingle-storey timber, tiled roof, building area 64 square meters (core 9 meters by 4.5 meters)
OwnerKominato Railway Co., Ltd.
Public AccessWorking station; waiting room open to passengers

References

Agency for Cultural Affairs, Database of National Cultural Properties: 小湊鉄道上総山田駅本屋
https://kunishitei.bunka.go.jp/heritage/detail/101/00011461
Cultural Heritage Online: 小湊鉄道上総山田駅本屋
https://online.bunka.go.jp/heritages/detail/222517
Kominato Railway: 22 facilities registered as Registered Tangible Cultural Properties (Japanese)
https://www.kominato.co.jp/corporate/topics/heritage/index.html

Last verified: 2026.10.01