The cracks formed after a group of visitors to the Skydeck at the Willis Tower stepped out on the Ledge, but Willis Tower officials said the glass itself did not crack, only the protective coating.

Four men had a terrifying few moments when the glass floor they were standing on 103 stories above Chicago in the Willis Tower observation deck appeared to develop cracks. The men were standing in one ...

CHICAGO, Illinois -- With no visitors at the Willis Tower Skydeck right now, some baby chicks took the opportunity to enjoy the view. They ventured out onto the clear observation boxes on the 103rd ...

SOM has completed the renovation and transformation of the Willis Tower Skydeck. The project includes an immersive new exhibition and a reimagined observation deck that will allow visitors to explore ...

Completed in 1973 and for 25 years the tallest building in the world, the 110-story Willis Tower has marked a major milestone in its transformation with the completion of a new Skydeck experience ...

CHICAGO — The owners of the Aon Center, Chicago's third-tallest skyscraper, on Monday unveiled plans for an observatory atop the building, potentially setting up a heated competition for tourist ...

Chicago is home to some of the country's tallest buildings. See which 10 skyscrapers top the list in the Windy City.

The news helicopter hovering over the Chicago Loop was right at eye level. That’s what my family of four noticed right away as we stepped out onto the 1,353-foot-high glass balcony jutting out from ...

The city was officially founded on March 4, 1837. The video in the player above is from a previous report. 360 Chicago, the observation deck high above Michigan Avenue, is offering free admission to ...