More than 1.7 million people make their way to Willis Tower's Skydeck Chicago each year ... enough time to get through the elevator line and up to the top. Willis Tower and its Skydeck sit ...

Owners of Willis Tower, Prudential Plaza ... bucks the broader trend in downtown Chicago, where many companies are shedding space, pushing the vacancy rate up to a record high.

CHICAGO (CBS) -- "Think about it. There must be higher love. Up in the tower formerly known ... at the top of the Willis Tower. The ceremony will occur on The Ledge, one the five glass floor ...

Navigate backward to interact with the calendar and select a date. Press the question mark key to get the keyboard shortcuts for changing dates. Skydeck Chicago at the Willis Tower $25 $500+ ...

One step at a time, more than 2,000 people from all around the world converged on Willis Tower to climb up the world's 12th ...