Polygonal Barn, Lincoln Township
The Polygonal Barn, Lincoln Township was an historic buildings located in Lincoln Township in rural Johnson County, Iowa, United States. It was built in 1880 by George Frank Longerbean. The barn was an 8-sided building and has subsequently been torn down. It featured a bell shaped roof of curving hand-laminated beams. The building was listed on the National Register of Historic Places in 1986.
