It looks darker than other recent skyscrapers, such as the Millennium ... notably the Pru, topped with its coloring-book version of a Zen temple. Hatless and uniformed, One Dalton stands like ...

That’s why Claudia from Rockford asks: Why is the CNA Center the only red skyscraper in Chicago ... But even with its unique coloring, Big Red is not really considered an icon.

“I started by coloring the buildings based on the time ... It was interesting to confirm that fewer skyscrapers were built during the Great Depression and almost none during World War II.” ...