Doncaster Round Barn

Doncaster Round Barn
Doncaster Round Barn
Locationnear Twin Bridges, Montana, United States
Coordinates45°34′12″N 112°18′49″W / 45.57000°N 112.31361°W / 45.57000; -112.31361
Builtc. 1882
Architectural styleRound, wood-frame barn
NRHP reference No.15000150
Added to NRHPApril 14, 2015

The Doncaster Round Barn, also called "Bayers' Barn" and "the Round Barn at Twin Bridges" is a three-story, wood-framed round barn located about 1.5 miles (2.4 km) north of Twin Bridges, Montana. Built about 1882 by mining entrepreneur Noah Armstrong to house his race horses, and featuring a 20 feet (6.1 m)-wide indoor circular aisle that was used for exercising horses, it is a National Register of Historic Places property notable for its unique architecture and as the birthplace of the Thoroughbred racehorse, Spokane, winner of the 1889 Kentucky Derby.