The Aon Center has paused plans to build an observatory with a thrill ride atop Chicago's third-tallest skyscraper, and the $185 million project will start almost a year behind schedule because of the coronavirus pandemic.
The Aon Center has paused plans to build an observatory with a thrill ride atop Chicago's third-tallest skyscraper, and the $185 million project will start almost a year behind schedule because of the coronavirus pandemic.
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