103 stories high: Swaying and soaring at Chicago’s Willis (Sears) Tower

Written by Finn Martin and Gavin Meichelbock

Willis Tower – still called Sears Tower by locals – stands 110 stories above the coast of Chicago. When the building opened in September 1973, it was the tallest building in the world for almost 25 years. While it only ranks at No. 26 today, it is still the highest observation deck in the United States. Beyond its stature, Willis Tower is also an architectural marvel because of its “bundled tube” design. This sturdy base of supporting buildings of differing heights allows the tower to sway in the wind as well as support the weight of the 222,500-ton structure. However, views from its 103-floor glass viewing structures are not the only thing Willis Tower has to offer, as lower levels consist of a massive food court and a museum that covers Chicago’s history. From the top floor to the bottom, Willis Tower gives travelers an educational and visual spectacle.