- Construction start: 1963
- Construction finish: 1966
- Designed by: Jacques Brownson
- Type: Skyscraper
- Stories: 31
- Maximum Height: 648 feet / 198 meters
- Site area: 123,110 square feet
- Floors above ground: 31
- Floors below ground: 3
- Maximum height: 647 feet, 11 inches
- Floor space: 1,465,723 square feet
- Building support caissons: 50
- Building support caisson depth: 120 feet
- Plaza support caissons: 108
- Plaza support caisson depth: 86 feet
- Steel beams: 27,000 tons
- Steel plates: 4,500 tons
- Column spacing: 48 feet x 87 feet
- Floor-to-floor height: 18 feet
- Passenger elevators: 40
- Freight elevators: 3
- Construction start: February 28, 1963
- Construction finish: February 8, 1966
- 1976: This building was renamed the Richard J. Daley Center
- September, 2010: This building was named #16 on Chicago Magazine's list of the Top 40 Buildings in Chicago.
- This was formerly the location of the Opera House Building.
- This was formerly the location of an RKO theater.
- At the time of its completion, this was the tallest building in Chicago. It lost that title in 1969 with the completion of the John Hancock Center.
- Architect: Jacques Brownson
- Architecture firm: C.F. Murphy Associates
- Architecture firm: Skidmore, Owings, and Merrill
- Architecture firm: Loebl Schlossman, and Bennett
- The lobby and plaza are Rockville granite from Cold Spring, Minnesota
(Credit; Chicago Architecture)
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Scanned : Photogrammetry (Processed using Agisoft PhotoScan)