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.

CHICAGO (WLS) -- Aon, a global financial risk consultant company, is planning to buy out competitor Willis Towers Watson. The deal, valued at about $30 billion, could potentially impact the name of ...

The Sears Tower was the world’s tallest building until 1996, when it was surpassed by the Petronas Twin Towers in Kuala Lumpur, Malaysia. With clear weather, four states are viewable up to 50 miles ...

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 ...

Gift Article 10 Remaining As a subscriber, you have 10 articles to gift each month. Gifting allows recipients to access the article for free. Zurich North America is moving its downtown office to ...

CHICAGO — The owner of the Willis Tower has unveiled a five-level expansion project designed to lure thousands of additional visitors to Chicago's tallest building each day. The Chicago Tribune ...

Gift Article 10 Remaining As a subscriber, you have 10 articles to gift each month. Gifting allows recipients to access the article for free. A California real estate investor has purchased a ...

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 ...

Aon To Buy Willis Towers Watson Insurance -- What Does That Mean For Willis Tower Name? If you're from Chicago and you're older than 30, you once knew the tall and iconic building composed of bundled ...