Niels Nielsen Fourteen-Side Barn Farm - Credit: Wikimedia Commons
The Niels Nielsen Fourteen-Side Barn Farm near Noonan, North Dakota, United States, is a round barn that was built in 1914 by successful Danish immigrant Niels Nielsen. It was built from a kit purchased from the Chicago House Wrecking Company. It was listed on the National Register of Historic Places in 1986. Read more on Wikipedia
Source: en.wikipedia.org