Key Tower is located in downtown Cleveland, Ohio.It was designed by  architect C├ęsar Pelli.Key Tower is the  18th tallest building in the United States, and the 104th tallest building in the world.

Building Name- Key Tower
Type- Office
Location- Public Square Cleveland, Ohio
Construction started- October 17, 1988
Construction Completed- 1991
Building Opening- January 1992
Height-
Architectural- 947 feet (289 m)
Roof- 888 feet (271 m)
No of Floors- 57
Floor area- 1,550,000 square feet (144,000 m2)
Architect- Cesar Pelli
Source-Wikipedia