Melrose Park, IL
Stern Pinball, Inc. is (as of this writing) the only remaining manufacturer of mechanical pinball machines. The company has a final assembly factory at 2020 Janice Avenue in Melrose Park, IL, an area of light manufacturing south of O'Hare Airport. As part of a Forgotten Chicago bus tour of Melrose Park in 2012, owner Gary Stern gave us a tour of the facility.
If all you have is a hammer, everything looks like a nail.