By the mid- to late 20th century, it saw businesses close or leave town until most of what was left was empty warehouses.

Then, in the early 2000s, a revitalization of the Warehouse District began. It gained traction in 2005, when there was a major art exhibit in one of the warehouses.

via 4 Millwork District buildings in Dubuque represent rebirth – THonline.com: Tri-state News.