|Country||United States of America|
|Year||1978 - 1983|
|Height||205.1 m / 673 ft|
Skidmore, Owings & Merrill
|Address||940-980 North Michigan Avenue|
- Uses a tube structure, a technique also used in the Willis Tower.
- The building consists of 3 tubes: they rise 21, 49 and 57 stories high.