The second tallest building in Chicago, this structure was designed by Edward Stone and completed in 1974. - sys, 12/26/1999
Now called the Aon Building, this structure is 1136' high with 80 stories and 2.3 million square feet. The tower measures 194' x 194' and is covered in Mount Airy granite. - Alotta, 09/26/2003
I worked on the 25th floor in this building in the 1970s (have some stunning photos taken by my department), moved into it in 1974 from the company's old building on South Michigan Avenue. - Rita of the SE, 04/21/2003
