Mile Square (Indianapolis)

Downtown Indianapolis refers to the central business district of Indianapolis, Indiana, United States. The boundaries of downtown Indianapolis have varied over time as the city has grown. The city's original platted area, the Mile Square, (bounded by North, South, East, and West streets) is sometimes used to denote the downtown area. However, the Indianapolis Regional Center Plan, which is the official plan for Downtown Indianapolis, defines the boundaries to be 16th Street on the north, Interstate 65/70 on the east, Interstate 70 on the south and the Belt Railroad on the west. The Regional Center therefore encompasses not only the Mile Square, but also the Indiana University – Purdue University Indianapolis campus, White River State Park, and the Eli Lilly and Company corporate headquarters.

Indianapolis's downtown has undergone a transformation from a place of vacant storefronts and little activity to that of a dynamic urban district.In the 1970s, the city suffered from the problems that affected other Rust Belt cities, such as decreased economic activity, white flight, and racial tension.The City of Indianapolis dealt with these issues and came up with solutions to revitalize the city's downtown.

Modern skyscrapers were constructed in the area during the 1980s, including Salesforce Tower (built 1990). Revitalization of the Central Canal followed. This, along with plans for a new downtown mall, basketball arena, and new attractions such as museums, helped to revitalize Downtown Indianapolis.

Thirty-six apartment buildings in downtown Indianapolis are listed on the National Register of Historic Places in the Apartments and Flats of Downtown Indianapolis Thematic Resources.

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