Maria and Franklin Wiltrout Polygonal Barn

Maria and Franklin Wiltrout Polygonal Barn, also known as the Alfred Barn, is a historic 14-sided barn located in Fairfield Township, DeKalb County, Indiana. Built in 1910, the structure is a two-story, wood-frame structure measuring 60 feet in width. It is topped by a two-pitch gambrel type roof with a 14-sided cupola. It is one of three 14-sided barns left in Indiana.

It was added to the National Register of Historic Places in 1993.