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 ...

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 ...

The Aon Center lost nearly half of its value since the property’s last valuation in 2018 as the prominent skyscraper struggles with increased vacancy, rising real estate taxes and a hefty loan balance ...

Chicago is home to some of the tallest buildings in the country, with some spanning more than 1,000 feet from base to tip. But which Windy City skyscrapers are the tallest? The Skyscraper Center, ...