This project is a renovation and will replace Aon Center (Previous)
You must be a CTBUH Member to view this resource.
Aon Center
Amoco Building, Standard Oil Building
Building
Proposed Renovation
Office
All-Steel
349.9 m / 1,148 ft
84
5
679
Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
You must be a CTBUH Member to view this resource.
Usually involved in the front end design, with a "typical" condition being that of a leadership role through either Schematic Design or Design Development, and then a monitoring role through the CD and CA phases.
Other Consultant refers to other organizations which provided significant consultation services for a building project (e.g. wind consultants, environmental consultants, fire and life safety consultants, etc).
Material Supplier refers to organizations which supplied significant systems/materials for a building project (e.g. elevator suppliers, facade suppliers, etc).
21 January 2021
The owner of one of Chicago’s biggest office towers is investing US$6.5 million to demolish and redesign its half-acre (0.2-hectare) plaza in anticipation of greater...
Located in downtown Chicago overlooking Millennium and Grant Parks on the eastern edge of the Loop. The Aon Center is one of the “string of pearl” buildings that stand-out on Chicago’s skyline for their remarkable height. At the time of its completion, the building was only the sixth supertall tower ever constructed. Originally clad in Carrara marble, it was the tallest marble-clad building in the world until it was reclad in white granite due to safety concerns in the early 1990s.
Simple in design, the Aon Center appears monolithic, without any setbacks or adornments. The building’s shape and scale are reminiscent of New York’s original World Trade Center buildings, its architectural contemporaries. Similar to the World Trade Center towers, the Aon Center 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. The columns also house piping and utility lines, eliminating the need for interior column chases that so often deprive buildings of valuable office space. They also serve to emphasize the building’s height and augment its vertical prominence.
Despite the building’s imposing configuration, it is still well-integrated into its urban habitat. The Pedway, a series of underground pedestrian walkways, connects the Aon Center to numerous surrounding buildings throughout the loop. A plaza decorated with fountains and ample seating envelops the tower on all sides and provides an inviting place for pedestrians to congregate on a nice day. Taken together, the Aon Center’s quiet, dignified façade and its simplicity overall, make it a unique and memorable addition to the skyline.
21 January 2021
The owner of one of Chicago’s biggest office towers is investing US$6.5 million to demolish and redesign its half-acre (0.2-hectare) plaza in anticipation of greater...
23 June 2020
The Aon Center has paused plans to build an observatory with a thrill ride atop Chicago’s third-tallest skyscraper, and the US$185 million project will start...
Subscribe below to receive periodic updates from CTBUH on the latest Tall Building and Urban news and CTBUH initiatives, including our monthly newsletter. Fields with a red asterisk (*) next to them are required.
View our privacy policy