Former Nike Missile bases in the Chicago-Gary Defense Area.
Project Nike (Greek: Νίκη, “Victory”, pronounced [nǐːkɛː]) was a U.S. Army project, proposed in May 1945 by Bell Laboratories, to develop a line-of-sight anti-aircraft missile system. The project delivered the United States’ first operational anti-aircraft missile system, the Nike Ajax, in 1953. A great number of the technologies and rocket systems used for developing the Nike Ajax were re-used for a number of functions, many of which were given the “Nike” name (after Nike, the goddess of victory from Greek mythology). The missile’s first-stage solid rocket booster became the basis for many types of rocket including the Nike Hercules missile and NASA’s Nike Smoke rocket, used for upper-atmosphere research.
Also check out this awesome article from Chicago’s WBEZ.
The “List of Nike Missile sites” wikipedia page has coordinates and information for every site.