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One South Dearborn

1 South Dearborn Street
Chicago IL United States

Construction Dates
Floor Count39
Floor Area249,326 m²
Building Uses
 - office
 - parking garage
 - restaurant
Structural Types
 - highrise
 - atrium
 - glass

 Heights ValueSource / Comments 
Roof571 ft
Main roof527 ft
Top floor501 ft

• Architect: DeStefano Keating and Partners
• Developer: Hines Interests

• The top of the building features a four story "lantern" that is lit up by sunlight in the day and also lit up at night. The "lantern" helps cover mechanical equipment at the roof of the building.

• On November 17, 2004 a crane swung over and punctured the Chase Tower across the street breaking a window and dropping debris on a car below, nobody was hurt.

• One South Dearborn has three private balconies, two on the 37th floor and one under the lantern on the 40th floor.

• Parking is provided in floors 1 - 8.

• 7 South Dearborn was originally planned on this site, it would have had 112 floors and would have been the tallest building in the world. The project was eventually cancelled in 1999.

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