Image © Gensler
For nearly 25 years, Willis Tower (long known as the Sears Tower) held the distinction of being the world’s tallest building, standing as a symbol of American might and engineering ingenuity. Today visitors queue up to soak in magnificent panoramic views of the city from the 103rd-floor observation deck of Chicago’s soaring black skyscraper that continues to be a point of pride for Chicago. At ground level, however, something is noticeably absent. The tourists come and go, but rarely linger. People who work in the building often walk blocks away to grab lunch or take a break from their offices. And at night, the block is much less active than during the day.