The Sears Tower, recently renamed Willis Tower, IS the landmark.
sears tower has 110 floors...each floor is 13ft tall
You can see Chicago from the Sears Tower. The company called Sears started in Chicago in 1830.
The Sears Tower, now known as the Willis Tower, is 1,450 feet from the street to the top of the roof. From the street to the tip of the spires on the top of the building is 1,729 feet.
Apparently I'm pretty sure its on the second floor! =D
5 hours
They aren't exactly on a floor. But it's at the top of the tower.
the sears tower has more than 17,000 Windows
The actual shape that composes Sears Tower is tube. It consists of 9 tubes and which from the sixty-sixth to ninetieth floor the tower form a shape of crucifix.
about 60 seconds.
No it's endless
climb the stairs.
sears tower.