Over 200 19th- and early 20th-century horse-drawn carriages, coaches, and sleighs, widely considered the best collection in the country, is housed in Horseshoe Barn and the adjacent Horseshoe Barn Annex.
The two-story Horseshoe Barn, completed in 1949, was modeled after a unique horseshoe-shaped dairy barn in Georgia, Vermont. Its hand-hewn beams are from 12 Vermont barns, and stone is from two gristmills. The outside length is 238½ feet, and the building is 32 feet wide.
Horseshoe Barn Annex was built in 1957 using old and new materials. It houses a Conestoga wagon, stagecoaches, and farm and trade vehicles.