Jacob Woodruff House

The Jacob Woodruff House is a two-story octagonal house constructed of concrete walls, featuring a large, windowed cupola, and metal roof. It is located in Ripon in the U.S. state of Wisconsin, and is listed on the National Register of Historic Places. Jacob Woodruff was a member of and the librarian for the Wisconsin Phalanx in 1846, a communal society based on the philosophy of Charles Fourier, a French socialist.