When and what color the Chicago skyline gets lit ... not do proposals or wedding announcements. Willis Tower, on the other hand, recently lent its antennas to a celebrity couple's baby gender ...

More than 1.7 million people make their way to Willis Tower's Skydeck Chicago each year, and it's easy to see why. Occupying the 103rd floor – that's nine floors higher than 360 CHICAGO – of ...

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 ...