49 (A)Every year, 1.5 million visitors come to take the 70-second ride in the elevator. (B)It then became the third in height when Taipei 101 was completed in the fall of 2004. (C)Additionally, this famous 110-floor city landmark is one of the most efficient office buildings in downtown Chicago as well. (D)Moreover, the Sears Tower is strategically located on Wacker Drive in the heart of the West Loop, Chicago’s leading market to its largest corporations and commuter rail stations.