William Haner Polygonal Barn

The William Haner Polygonal Barn was a historic building located near Pisgah in rural Harrison County, Iowa, United States. It was built in 1912 by Comstock Construction. The 12-sided structure measured 54 ft in diameter and featured white horizontal siding with a block foundation, a two-pitch roof, and a large hay dormer on the south side. It was originally used as a Purebred Hereford cattle barn. The barn was listed on the National Register of Historic Places in 1986. It was destroyed in a fire caused by lightning in 2002.