Chicago Architecture Info
Wrigley Building
400-410 North Michigan Avenue
Chicago, Illinois 60611
Basic Information
Designed by Graham, Anderson, Probst & White
Type Skyscraper
Floors: 30
Maximum height 450 feet/135 meters
Neighborhood: Near North Side
More Information
  • January, 1920: Groundbreaking for the Wrigley Building.
  • November 11, 1920: The cornerstone was laid for the main (south) tower.
  • April, 1920: The south tower was completed.
  • May, 1924: The north tower was completed.
  • 1929: Radio station WBBM(AM) moved to the Wrigley Building from the Broadmoor Hotel.
  • 1931: The skywalk was added.
  • 1956: WBBM(AM) and WBBM-TV moved out of the Wrigley Building.
  • June 19, 2005: The Chicago Tribune reported that the Wrigley company considered leaving its signature headquarters for more modern accommodations. The newspaper speculated that the building could be converted into residential condominiums.
  • July, 2005: The Wrigley Building's banks of 1971 floodlights along the Chicago River were replaced with new lights on standards along Michigan Avenue. The new lights have more focused beams to reduce light pollution and make sleeping easier for people in nearby residential buildings. Wrigley agreed to pay the city $15,000 a year to use the sidewalk space.