Skip to main content


CSI: How Chicago's Iconic Tower Underwent a Modern Transformation

October 07, 2022
West view of Tower looking up from Wacker Street Entrance canopy. Thornton Tomasetti
Skylight erection progress under review by Thornton Tomasetti's facade engineers. Thornton Tomasetti
Construction progress of new podium from southwest corner of property. Thornton Tomasetti

"Global architecture, design, and planning firm, Gensler, led the redevelopment of the iconic Willis Tower through renovation and adaptive reuse, modifying the base of the tower into an indoor and outdoor mixed-use establishment, open to the public."

We provided integrated structural design, façade engineering, construction engineering, and protective design services to realize the owner's vision for this iconic tower.

Read more at CSI