Family evacuated from Willis Tower 1,353ft above the streets of Chicago. Glass floor of tourist attraction The Ledge appeared to shatter beneath them. Transparent viewing deck opened in 2009 on 103rd floor and the three-inch thick glass is meant to withstand 5-tons
Family evacuated from Willis Tower 1,353ft above the streets of Chicago. Glass floor of tourist attraction The Ledge appeared to shatter beneath them.
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