Located across from the new Compuware Headquarters, Campus Martius is the "point of origin" of Detroit's coordinate system; Cadillac Square, Grand Circus Park and such landmarks as the Ford Auditorium and intersecting main streets: Gratiot, Madison, Monroe, Broadway and Grand River. Map illustrations are adapted from a 1960 publication outlining the unit foot and land values for the entirety of city property before its decline. • Print size: 18" from bottom point.