Morton, Mack, Barn - Credit: Wikimedia Commons
The Mack Morton Barn is a historic eleven-sided barn at 11516 Appleby Road in Appleby, Arkansas. Built about 1900 to house cows and horses, it is sheathed in board-and-batten siding and topped by a hip roof with an eleven-sided cupola at the center. It is believed to be the only surviving geometrically unusual barn in the state. Read more on Wikipedia
Source: en.wikipedia.org