Aon Center

1136 ft. Built as the Standard Oil Building, the Aon Center is America's sixth tallest building from base to roof, after the Empire State Building in New York City, and fifteenth tallest in the world by architectural detail. It was built in 1972 by architect Edward Stone and initially was faced with marble, but the windy city began to blow the marble off the sides of the building. The entire building had to be refaced with granite — a costly job at one-half of the entire building costs! A walk around the base can be particularly gratifying to admire the uninterrupted views straight up the shear walls and the "musical sculptures.".

• history
• outdoors

Address

200 E Randolph St

Phone

+13123811000

Website

aoncenter.info (opens in a new tab)