The Height of the Sears tower (these days better known as “the Willis tower”) in Chicago is 527 meters, At the time of the build is was the highest building in the world.
Other facts about the Sears (Willis) tower
Location: Chicago, Illinois
Start build: 1970
Opening: 1974
Height: 527 Number of stories: 110
Ground surface: 416.000 m²
Cost to build: $ 186.000.000
Architect: Skidmore, Owings and Merrill