Aon Center (Chicago) Aon Center (Chicago) The Aon Center (200 East Randolph Street, formerly Amoco Building) is a modern supertall skyscraper in the Chicago Loop, Chicago, Illinois, United States, designed by architect firms Edward Durell Stone and The Perkins and Will partnership, and completed in 1974 as the Standard Oil Building. With 83 floors and a height of 1,136 feet (346 m), it is the third tallest building in Chicago, surpassed in height by the Willis Tower, and the Trump International Hotel and Tower. The building is managed by Jones Lang LaSalle, which is also headquartered in the building. Aon Center formerly had
Glenbard West High School style of a castle, complete with roof turrets. Glenbard, as it was originally named, was constructed in 1922 atop Honeysuckle Hill, overlooking Lake Ellyn. Built with dark red brick, the building was built with castle-like design, complete with a turret and other minor castle details. Glenbard West also has a tower known as the sixth floor. From the window of the sixth floor tower, the Willis (formerly Sears) Tower in downtown Chicago can be seen on a clear day. Athletics were initially played in a gymnasium, built in 1936, in the school building itself, but with the construction of a