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

Here’s some background information about Willis Tower, formerly the Sears Tower, located in Chicago. Facts The Sears Tower was the world’s tallest building until 1996, when it was surpassed by the ...

It took about an hour for Chicago police and Willis Tower to give the all clear, and in that time there was some real fear in the building. The initial report of a gunman on the 50th floor came in ...

The Willis Tower, one of the tallest buildings in the world, has 110 floors. "It was really challenging," first time climber Brian Baker said. "It was steeper than I thought." ...

Chicago’s Willis Tower may not be the tallest building in the United States, but it is the tallest building to achieve Leadership in Energy and Environmental Design platinum certification. This ...

New World Trade Center Tops Willis Tower As Tallest In U.S. The Willis Tower on Tuesday lost the title of the tallest building in the United States to the new World Trade center in New York.

Photos from the Chicago Sky’s introductory news conference for their WNBA draft selections on April 17, 2025, at The Metropolitan Club at Willis Tower. The Chicago Sky's Maddy Westbeld, from ...

Willis Tower hasn’t been immune to shifts in the marketplace. United Airlines, the building’s largest tenant, announced early last year it would give up three of its 17 floors after posting ...

The deck is on the 103rd floor of Willis Tower – 1,353 feet in the air, making it the highest observation deck in the United States. The Skydeck celebrated a little differently than most.