Willis Tower

Willis Tower

Contractor: Turner and Clayco Joint Venture

Turner and Clayco Joint Venture

Architect: Gensler Architects

Gensler Architects

Owner: BRE 312 Owner, LLC

BRE 312 Owner, LLC

Project Delivery Method:

Design Assist, Design Build

Project Description:

The Willis Tower, built as and still commonly referred to as the Sears Tower, is a 110-story, 1,450-foot skyscraper in Chicago, Illinois.  At completion in 1973, it surpassed the World Trade Center in New York to become the tallest building in the world, a title it held for nearly 25 years; it now stands as the 2nd tallest building in the Western Hemisphere and 16th-tallest in the world. Willis Tower was the first building to use this innovative "bundled tube" structure design and is now undgoing rennovations to expand its footprint.

As part of the transformation, more than 300,000 square feet of new retail, dining and entertainment space, called the Catalog, to be added to the bas