Lincoln County Washington (Historic Districts) has 3 places on the National Register of Historic Places including 3 places of Statewide significance. Significant places include Fort Spokane Military Reserve, Little Falls Hydroelectric Power Plant and Long Lake Hydroelectric Power Plant.
Some of the country's most noteable architects helped create the Lincoln County places including Washington Water Power Co. and US Army. Prominent architectural styles found in Lincoln Country are Classical Revival and Romanesque.