Delaware Building
Encyclopedia
The Delaware Building is a building in the Chicago Loop
Chicago Loop
The Loop or Chicago Loop is one of 77 officially designated Chicago community areas located in the City of Chicago, Illinois. It is the historic commercial center of downtown Chicago...

 built in the massive rebuilding effort after the 1871 Great Chicago Fire. It is significant for being one of the few buildings to maintain its 1870's character, as an Italianate structure, in an area dominated by more modern structures. The building is also notable for its early use of a precast concrete
Precast concrete
By producing precast concrete in a controlled environment , the precast concrete is afforded the opportunity to properly cure and be closely monitored by plant employees. Utilizing a Precast Concrete system offers many potential advantages over site casting of concrete...

 façade. The building was designated a Chicago Landmark
Chicago Landmark
Chicago Landmark is a designation of the Mayor of Chicago and the Chicago City Council for historic buildings and other sites in Chicago, Illinois, United States. Listed sites are selected after meeting a combination of criteria, including historical, economic, architectural, artistic, cultural,...

 on November 23, 1983 and listed on the National Register of Historic Places
National Register of Historic Places
The National Register of Historic Places is the United States government's official list of districts, sites, buildings, structures, and objects deemed worthy of preservation...

on July 18, 1974.

As built, the building had five floors with a basement. The first two stories were primarily metal and glass to provide storefront windows for displays. In 1889, two additional floors were added, and three bays were removed from the Randolph Avenue façade.
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