Detroit River Light, also called Bar Point Shoal Light, is an offshore Lake Erie lighthouse south of the Detroit River mouth that marks the channel used by ships turning into the river. First marked by a lightship in 1875, the present sparkplug lighthouse was completed in 1885 by the United States Lighthouse Board. Built on a specially engineered crib and granite pier to resist weather, ice, and currents, it served a heavily traveled international waterway and later became known during Prohibition as a rendezvous for rum runners. Still active today, it withstood a 1997 freighter collision with only minor damage and is listed on the National Register of Historic Places.