Aon Center, Skyscraper Building Chicago, Architect, Project, Big Stan Height, Standard Oil, Design, Date

Aon Center Chicago : Skyscraper Architecture

Big Stan: High-Rise Development in Chicago, United States of America – design by architect Edward Durell Stone

page updated Aug 20, 2016

Aon Center

Location: 200 East Randolph Street
Date built: 1970-73/74
Design: Edward Durell Stone, architect / Perkins + Will, architects

Former Amoco Building, orig. Standard Oil Building

Floors: 83 storeys

Height: 1,136ft / 346m high

This skyscraper is the third tallest building in Chicago at the time of writing

Address: 200 E Randolph St, Chicago, IL 60601, United States

Aon Center Chicago architects : Perkins + Will

The Standard Oil Building was constructed as the new headquarters of the Standard Oil Company of Indiana, which had previously been housed at South Michigan Avenue and East 9th Street.

When it was completed in 1974 it was the tallest building in Chicago and the fourth-tallest in the world.

A year later, the Sears Tower took the title as Chicago’s and world’s tallest.

The building employs a tubular steel-framed structural system with V-shaped perimeter columns to resist earthquakes, reduce sway, minimize column bending, and maximize column-free space. This construction method was also used for the former World Trade Center towers in New York City.


The Standard Oil Building was renamed the Amoco Building in 1985. In 1998, Amoco sold the building to The Blackstone Group. It was renamed as the Aon Center at the end of 1999, although the Aon Corporation would not become the building’s primary tenant until September 2001. In 2003, Wells Real Estate Investment Trust, Inc. acquired the building.
source: wikipedia


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