Skydeck Chicago at Willis Tower (Sears Tower), Chicago: How to Visit and What to Do Nearby

The Skydeck at Willis Tower occupies the 103rd floor of the 442-meter building in Chicago's Loop, formerly known as the Sears Tower. When completed in 1973, it was the tallest building in the world, holding that title for 25 years. The observation deck sits at 412 meters, and four glass-floored Ledge boxes extend 1.3 meters beyond the building's west face, allowing visitors to look straight down to the street. On clear days, visibility from the deck reaches roughly 80 kilometers, extending into four states—Illinois, Indiana, Wisconsin, and Michigan. is just one of many options in Chicago. Major attractions worth considering include 360 Chicago Observation Deck (Formerly John Hancock Observatory), Adler Planetarium, and Chicago River.