The Hattie O. and Henry Drake Octagon House, built c. 1893, is an octagonal house located at 605 3rd Street, South West, in Huron, South Dakota. The home's most unusual feature may be its mansard roof. On January 30, 1992, it was added to the National Register of Historic Places. References Houses on the National Register of Historic Places in South Dakota Buildings and structures in Huron, South Dakota Octagon houses in the United States Houses in Beadle County, South Dakota National Register of Historic Places in Beadle County, South Dakota