The Arc at Old Colony
20070513 Old Colony Building.JPG
The Arc at Old Colony is located in Chicago metropolitan area
The Arc at Old Colony
The Arc at Old Colony is located in Illinois
The Arc at Old Colony
The Arc at Old Colony is located in the United States
The Arc at Old Colony
LocationChicago, IL
Coordinates41°52′35.78″N 87°37′44.34″W / 41.8766056°N 87.6289833°W / 41.8766056; -87.6289833Coordinates: 41°52′35.78″N 87°37′44.34″W / 41.8766056°N 87.6289833°W / 41.8766056; -87.6289833
ArchitectHolabird & Roche
Architectural styleChicago
NRHP reference No.76000701 [1]
Significant dates
Added to NRHPJanuary 2, 1976
Designated CLJuly 7, 1978

The Arc at Old Colony (Old Colony Building until 2015)[2] is a 17-story landmark building in the Chicago Loop community area of Chicago, Illinois. Designed by the architectural firm Holabird & Roche in 1893–94, it stands at approximately 215 feet (65.5 m) and was the tallest building in Chicago at the time it was built.[3] The building was designated a Chicago Landmark on July 7, 1978.[4] It was the first tall building to use a system of internal portal arches as a means of bracing the structure against high winds.[5]

The building was added to the National Register of Historic Places in 1976.[1] It is directly across the street to the west of the Harold Washington Library. The address of the Old Colony Building is 407 S. Dearborn Street.

Built as an office building, the Old Colony was converted to an apartment building in 2015. The units are marketed to college students attending school in the South Loop.[2]

Window Detail
Window Detail


  1. ^ a b "National Register Information System". National Register of Historic Places. National Park Service. January 23, 2007.
  2. ^ a b Kamin, Blair (August 29, 2015). "Old Colony Building renovation has youthful kick". Chicago Tribune. Retrieved October 15, 2016.
  3. ^ "The Old Colony Building". Chief Engineers Association of Chicagoland. 2009. Retrieved July 6, 2020.
  4. ^ "Old Colony Building". City of Chicago Department of Planning and Development, Landmarks Division. 2003. Retrieved May 7, 2007.
  5. ^ Schulze, Franz & Harrington, Kevin (2003). Chicago's Famous Buildings (5th ed.) Chicago: University of Chicago Press, p. 84. ISBN 0-226-74066-8.