Opening its doors in 1974, Skydeck Chicago has long been a favorite attraction of both locals and travelers alike. The 103rd ... floor observation deck, housed in the world-renowned Willis Tower, boasts panoramic views of up to 4 states and attracts approximately 1.7 million guests annually. Transforming the Chicago experience, The Ledge offers a unique and unobstructed view of the city- from 1,353 feet in the air. Daring to walk outside the building on 3.5 inches of glass makes for a once-in-a-lifetime view and an unforgettable memory to match. At Skydeck Chicago, the world really is at your feet. read more