Alger County Michigan (Vacant / Not In Use) has 3 places on the National Register of Historic Places including 2 places of Statewide significance. Significant places include Grand Island Harbor Rear Range Light and Pickle Barrel House, Hill's Store.
Some of the country's most noteable architects helped create the Alger County places including US Coast Guard and Harold S. Cunliff. Prominent architectural styles found in Alger Country are .