• Broad Street, Columbus, Ohio, c. 1910.

    Broad and High streets, Columbus,
    Ohio, c. 1910

  • Broad and High streets, Columbus, Ohio, 2015.

    Broad and High streets, Columbus, Ohio, 2015.

  • Public Square at Market Street, Canton, Ohio, c. 1900.

    Public Square at Market Street, Canton, Ohio, c. 1900.

  • Central Plaza at night. Canton, Ohio, 2007. Credit: Canton Regional Chamber of Commerce

    Central Plaza, Canton, Ohio, 2007.
    Credit: Canton Regional Chamber of Commerce

  • Meridian Street, looking north from Washington toward the Soldiers and Sailors Monument in Indianapolis, Indiana, 1904.

    View of Soldiers and Sailors Monument from Meridian
    Street, Indianapolis, Indiana, 1904.

  • View of Soldiers and Sailors Monument from Meridian Street, Indianapolis, Indiana, 2009. Credit: Ken Schroeppel

    View of Soldiers and Sailors Monument from Meridian Street,
    Indianapolis, Indiana, 2009. Credit: Ken Schroeppel

  • Cleveland Public Square, Cleveland, Ohio, c. 1900.

    Cleveland Public Square, Cleveland,
    Ohio, c. 1900.

  • Cleveland Public Square from South Roadway, Cleveland, Ohio, 2012.

    Cleveland Public Square, Cleveland, Ohio, 2012.
    Credit: © Ian Dagnall Commercial Collection / Alamy Stock Photo

  • Campus Martius, Detroit, Michigan, 1900.

    Campus Martius, Detroit, Michigan, 1900.

  • Campus Martius, Detroit, Michigan, 2015.

    Campus Martius, Detroit, Michigan, 2015.
    Credit: Michigan Municipal League/mml.org

  • Central Square, Youngstown, Ohio, c. 1925.

    Central Square, Youngstown, Ohio, c. 1925.
    Credit: Mahoning Valley Historical Society, Youngstown, OH.

  • Central Square, Youngstown, Ohio, c. 2010.

    Central Square, Youngstown, Ohio, c. 2010.
    Credit: Jack Pearce

  • Waterfront, Toledo, Ohio, c. 1900. Credit: David Weller/www.voiland.org

    Waterfront, Toledo, Ohio, c. 1900.

  • Waterfront, Toledo, Ohio, c. 2003 Credit: David Weller

    Waterfront, Toledo, Ohio, c. 2003 Credit: David Weller

  • Sixth Street Bridge, Pittsburgh, Pennsylvania, c. 1900.

    Sixth Street Bridge, Pittsburgh, Pennsylvania, c. 1900.

  • Sixth Street Bridge (Roberto Clemente Bridge), Pittsburgh, Pennsylvania, 2010.

    Sixth Street Bridge (Roberto Clemente Bridge), Pittsburgh, Pennsylvania, 2010.

  • Fountain Square, Cincinnati, Ohio, 1907.

    Fountain Square, Cincinnati, Ohio, 1907.

  • Fountain Square, Cincinnati, Ohio, 2015.

    Fountain Square, Cincinnati, Ohio, 2015.

  • Pearl Street and Division Avenue, Grand Rapids, Michigan, 1875.

    Pearl Street and Division Avenue, Grand Rapids, Michigan, 1875.
    Credit: Grand Rapids Public Library

  • Pearl Street, Grand Rapids, Michigan, 2015.

    Pearl Street, Grand Rapids, Michigan, 2015.

  • Downtown Charleston, West Virginia, 1890.

    Downtown Charleston, West Virginia, 1890.
    Credit: mywvhome.com

  • Downtown Charleston, West Virginia, 2015.

    Downtown Charleston, West Virginia, 2015.
    Credit: mywvhome.com