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Aon CenterDownload Project Factsheet

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Official Name Aon Center
Former / Other Name Amoco Building, Standard Oil Building
Type building
Status Completed
Country United States
State Illinois
City Chicago
Street Address 200 East Randolph Drive (Map)
Building Function office
Structural Material steel
Start of Construction 1970
Completion 1973
Global Ranking #32 tallest in the World
Regional Ranking #5 tallest in North America
National Ranking #5 tallest in United States
City Ranking #3 tallest in Chicago
Height: Architectural 346.3 meter / 1136 feet
Height: Occupied 328.0 meter / 1076 feet *
Height: To Tip 362.5 meter / 1189 feet *
Floors Above Ground 83
Floors Below Ground 5
Tower GFA 334,448 m² / 3,599,968 ft²
# of Parking Spaces 679

* CTBUH estimated data

Companies Involved
Architect Edward Durell Stone & Associates
Structural Engineers Perkins + Will; Perkins + Will Engineering Division
MEP Engineers Cosentini; Economy Mechanical Industries, Inc.
Main Contractor Turner Construction
Other Consultant RWDI
Material Suppliers
• C Cupples;
• Elevator Otis Elevator Company
• Sealants Dow Corning Corporation
News Articles
What's 'That Thing' Atop the Aon Center?
Chicago Tribune, 2009-08
'Lollipop building' Architect Also Designed Aon Center
Chicago Tribune, 2008-09