Aleutian Islands County Alaska (Historic Districts) has 5 places on the National Register of Historic Places including 5 places of National significance. Significant places include Adak Army Base and Adak Naval Operating Station, Ananiuliak Island Archeological District, Cape Field at Fort Glenn (Umnak Island), Dutch Harbor Naval Operating Base and Fort Mears, U.S. Army and Seal Island Historic District.
Prehistoric cultural affiliation(s) include Eskimo-Aleut dating back to 8499 BC.
Some of the country's most noteable architects helped create the Aleutian Islands County places including US Army. Prominent architectural styles found in Aleutian Islands Country are .