ArentFox Schiff is finalizing a lease renewal at Willis Tower, reducing its office space by more than 50 percent while ...

In the later years of Richard M. Daley’s mayoralty and especially during the tenure of Rahm Emanuel, the city of Chicago ...

The pending deal is an example of the space-shedding trend that continues to beset the downtown office market.

A fire alarm at United Airlines headquarters at the Willis Tower in Illinois, Chicago sparked a nationwide ground stop for all United flights on Thursday.

The Sears Tower/Willis Tower situation is like my childhood friend Danny. In the 6th grade he went off to summer camp, just to come back with a new name: DJ. Suddenly, I didn't like him anymore.

A rebound is underway for retail on North Michigan Avenue, but slowly and not everywhere. Crain’s commercial real estate ...

Things To Do Willis Tower’s renovated Skydeck opens Friday, offering a unique Chicago experience for tourists and locals alike. Here’s a sneak peek. Brian Cassella / Chicago Tribune 1 of 16 ...

A Willis Tower spokesman Bill Utter clarified Thursday that it was a protective coating, not glass, that cracked – as it sometimes does. “At no time whatsoever was the integrity of the ...

Willis Tower, downtown’s 1,450 ft. stack of architecture, engineering, commerce and civic pride, turns 40 next year. If you are of a certain age, that milestone might be as jarring as the fact ...

Willis Tower was the nation’s tallest building until 2014, when it was knocked off that pedestal by One World Trade Center in New York City. “At the time it was done, it stood out.

Reports of an active shooter at Willis Tower on Wednesday afternoon were unfounded, police officials said. The call of the threat came in at 3:45 p.m., Chicago police said.