Arcadia Round Barn, built in 1898 by local farmer William Harrison Odor in Arcadia, Oklahoma, became one of the best-known landmarks on historic U.S. Route 66. Unlike many so-called round barns, it is truly circular, built from native bur oak boards soaked green and bent to form curved walls and roof rafters. Measuring 60 feet across, it included a second level for community gatherings as well as farm use. The barn gained wider fame when Route 66 passed beside it in the 1920s, later declined with reduced traffic, and was restored after its roof collapsed in 1988, reopening in 1992 as a preserved Route 66 attraction.

Photo: Wikipedia