Doors and window sashes are no longer made in Dubuque’s Historic Millwork District. Even so, symbols that it was once a hub of industrial activity are everywhere as private developers and the city turn the 17-square-block area into a place for restaurants, offices and apartments. “It was a perfectly designed and planned project from an urban design standpoint as a live-work-play community, but it was done well over 100 years ago for factories.