JR Tazawako Line Koiwai Station Building

The Gateway Station to Koiwai Farm

The JR Tazawako Line Koiwai Station Building (ＪＲ田沢湖線小岩井駅本屋) is the station building that served as the gateway to Koiwai Farm of 1921 in Ogama Kazabayashi, Takizawa City, Iwate Prefecture, and was registered as a Registered Tangible Cultural Property (structure) on August 6, 2025 (Agency for Cultural Affairs).

The Agency records a single-storey timber building with an iron-sheet roof and a building area of 87 square metres, altered in the late Showa period and in 2023; registration number 03-0127.

A Small Station to a Standard Plan

The station building of Koiwai Station on the JR Tazawako Line, south of Koiwai Farm, was built in 1921 and became the gateway to the farm (Agency for Cultural Affairs). A single-storey gabled timber building 17.3 by 4.6 metres, entered from the long side, it has a gabled carriage porch projecting at the west end of the north front.

Its plan almost matches the standard design of the state railways, and the Agency notes that it recalls the bustle of the opening of the Hashiba light railway.

Why It Was Registered

The Agency registered it for its contribution to the historic landscape.

What to Look For

Look for the gabled carriage porch on the north front and the small station built to a near-standard plan (Agency for Cultural Affairs).

Visiting

It is owned by Takizawa City (Agency for Cultural Affairs). It serves as a station building on the JR Tazawako Line; no official information on visits to the building was found.