Fox Valley, IL

ZIP code 60599 is a unique area located in Chicago, Illinois. Known as the "Sears Tower" or the Willis Tower, it is the prominent landmark in this area. Standing at 1,450 feet, it held the title as the tallest building in the world until 1998. The zip code also includes the Chicago Board of Trade Building, a historic skyscraper housing financial institutions, adding to the architectural charm of the neighborhood.