[6] City Council chambers, located on the second floor, were fully restored in 1986, and feature Art Deco elements echoing those found throughout the building.

The district was determined to be eligible for the National Register on September 14, 1988, due to its association with community planning, engineering, government, and transportation in the city, and for its Art Deco, Neoclassical, and Renaissance Revival architecture.

[9] From 1955 to 2020, the plaza was home to a 20 foot (6.1 m) tall bronze statue of Christopher Columbus by Italian sculptor Edoardo Alfieri.

The five-story building, constructed of Indiana limestone, was designed by the Allied Architects Association of Columbus in the Neoclassical style.

[6] Allied Architects also designed the adjacent Central Police Station building at West Gay Street and Marconi Boulevard, which opened on March 26, 1930, was vacated in 1991 with the opening of a new police headquarters building, and was renovated in 2012 as 77 North Front Street to allow the consolidation of various city government offices.