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 Willis
Tower fun facts
Little-known facts about the Western Hemisphere's tallest building
Did you know?
- The Willis Tower is 1,450 feet (443 meters) high - 1,730
feet (520 meters) including twin antenna towers.
- The Skydeck is 1,353 feet (412 meters) above the ground.
- The lowest level of Willis Tower is 43 feet (13 meters) below the Franklin St. elevation.
- The combined weight of the building is 222,500 tons - that's
445,000,000 lbs. or 201,849,000 kg.
- The cost of building the Willis Tower was in excess of $150
million.
- The Willis Tower, opened in 1973, took 3 years to build.
- The building has 4.5 million gross square feet (418,064 gross square meters) of floor space.
- On a clear day, you can see four states - Illinois, Indiana,
Wisconsin and Michigan. Visibility from the Skydeck is approximately
40-50 miles (65 - 80 kilometers).
- The average sway of the building is approximately 6 inches (152 millimeters) from true center.
- The Willis Tower has approximately 16,100 bronze-tinted windows.
- 6 roof-mounted robotic window washing machines clean all 16,100
windows.
- Willis Tower elevators operate as fast as 1,600 feet (488 meters) per minute
- among the fastest in the world.
- The Willis Tower contains 25,000 miles (40,223 kilometers) of electrical cable.
- Approximately 43,000 miles (69,200 kilometers) of telephone cable runs through the building.
- The Willis Tower was designed for more than 12,000 occupants.
- Approximately 25,000 people enter the building each day.
- Approximately 1.3 million tourists visit the Skydeck each
year.
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