Doncaster Round Barn, Round barn in Twin Bridges, Montana.
The three-story wooden barn features a circular design with a diameter of 100 feet and stands 48 feet tall near the Jefferson River Valley.
Noah Armstrong built this barn in 1882 to house racehorses, including Spokane, the first Montana-born horse to win the Kentucky Derby in 1889.
The barn represents Montana's agricultural evolution, transitioning from a horse breeding facility to a cattle operation through different ownership periods.
The first floor contains 26 box stalls arranged around a 20-foot-wide circular track, with each stall connecting to individual outdoor paddocks.
The structure incorporates an elevator system and a windmill-powered water supply that delivered water directly to each horse stall through gravity.
Location: Montana
GPS coordinates: 45.57000,-112.31361
Latest update: September 23, 2025 14:24
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