Built in 1856 , it was designed by local architect John F. Rague for local politician Edward Langworthy .
The Langworthy House , also known as the Octagon House , is an historic building located in Dubuque , Iowa , United States .
Built in 1856 , Langworthy House was designed by local architect John F. Rague for local politician Edward Langworthy .
The Langworthy House , also known as the Octagon House , is an historic building located in Dubuque , Iowa , United States .