We had some time so we decided to drive through Rockford, Illinois. Here is some information from the Rockford Wiki.
Rockford is situated on the banks of the Rock River. The largest city in Illinois outside of the Chicago metropolitan area, Rockford is the fourth-largest city in the state and the 171st most populous in the United States.
Settled in the mid-1830s, the position of the city on the Rock River made its location strategic for industrial development. In the second half of the 19th century, Rockford was notable for its output of heavy machinery, hardware and tools; by the twentieth century, it was the second leading center of furniture manufacturing in the nation, and 94th largest city. During the second half of the 20th century, Rockford struggled alongside many Rust Belt cities. Since the late 1990s, efforts in economic diversification have led to growth of automotive, aerospace, and healthcare industries, as well as the undertaking of various tourism and downtown revitalization efforts.
So we travelled through Rockford and saw some great murals. There even some YouTube videos showing you the mural being painted. The links are provided underneath the picture.