Round Barn, Washington Township - Credit: Wikimedia Commons
The Round Barn, Washington Township is a historic building located near Sciola in rural Montgomery County, Iowa, United States. It was built in 1917 as a hog barn. Typical of a barn built for this use in features a multitude of windows on the wall and on the cupola, which provided light and ventilation. with a The building is a 24-sided structure that measures in diameter. The barn features red vertical siding, a 12-section cupola, and a two-pitch sectional roof. It has been listed on the National Register of Historic Places since 1986. Read more on Wikipedia
Source: en.wikipedia.org