Hines Round Barn

The Hines Round Barn in Sallisaw, Oklahoma, also known as Williams Barn, is a round barn that was built in 1913 for W.R. Hines. It was listed on the National Register of [Historic Places] in 1984.
It is approximately round, but in fact is multi-sided, having 20 approximately straight wall sections. Its roof was supported in the center by a circular scaffolding inside the barn. In 1983 the barn was about in circumference, had white walls, and had a silver-painted corrugated metal roof.