More than 1.7 million people make their way to Willis Tower's Skydeck Chicago each year ... this platform is made entirely of glass – even the floor. Travelers also liked the video screens ...

Skydeck Chicago​ is letting four couples tie the knot, or renew their vows, on The Ledge with its glass floors.

Pelli Clarke & Partners completed a 57-story office tower leased almost exclusively to Salesforce in Chicago. Clad ...

The tower owners claim the protective glass worked as designed. But will the experience ever be the same? Stare into the eerie soul of some of the world's tallest skyscrapers with Iván Navarro's ...

Owners of Willis Tower, Prudential Plaza and Aon Center received ... The lease bucks the broader trend in downtown Chicago, where many companies are shedding space, pushing the vacancy rate ...