The Polygonal Barn, New Oregon Township is an historical structure located near Cresco in rural Howard County, Iowa. It was built in 1920 and has been listed on the National Register of Historic Places since 1986. The 16-sided building measures 70 feet (21.1 m) around. It features a two-pitch sectional roof, a 13-foot (4 m) central silo and small dormers near the top of the roof on the north and south sides.
