how many states can you see from the sears tower
The Willis Tower observation deck, called the Skydeck, opened on June 22, 1974. Located on the tower's 103rd floor, it is 1,353 feet (412.4 m) high, making it the highest observation deck in the United States and one of Chicago's most famous tourist attractions. Tourists can experience how the building sways on a windy day. They also can see far over the plains of Illinois and across Lake Michigan to Indiana, Michigan, and Wisconsin on a clear day. Elevators take tourists to the top in about 60 seconds, and allow tourists to feel the pressure change as they rise up. The Skydeck competes with the John Hancock Center's observation floor a mile and a half away, which is 323 feet (98.5 m) lower. Some 1.7 million tourists visit the Skydeck annually. A second Skydeck on the 99th floor is also used if the 103rd floor is closed. The tourist entrance can be found on the south side of the building along Jackson Boulevard.