Allamakee County Iowa (Historic Districts) has 3 places on the National Register of Historic Places including 1 place of National significance and 1 place of Statewide significance. Significant places include Effigy Mounds National Monument and Slinde Mound Group.
Prehistoric cultural affiliation(s) include Red Ocher, Hopewell, Late Woodland, Allamakee Phase and Keyes Phase dating back to 2999 BC. Prominent architectural styles found in Allamakee Country are Exotic Revival.