THE LEDGE AT SKYDECK CHICAGO CHICAGO

摘要

SOM, the original designer of the Sears Tower (now Willis Tower), was charged with enhancing the Chicago landmark with an innovative addition that wouldn't compromise its original spirit. A team of architects and engineers responded with a proposal for The Ledge at Skydeck Chicago, a set of four movable glass viewing platforms that extend beyond the building's west facade, 103 stories in the air. Each ledge moves in and out of the building: it can be recessed into the interior space, flush with the facade, or fully extended. The structural glass boxes can support the weight of an elephant and endure thousands of visitors daily.