Lake County Minnesota (Vacant / Not In Use) has 4 places on the National Register of Historic Places including 1 place of National significance and 3 places of Statewide significance. Significant places include Duluth and Iron Range Railway Ore Dock No. 6, HESPER Shipwreck Site, NIAGARA Shipwreck Site and Split Rock Lighthouse.
Some of the country's most noteable architects helped create the Lake County places including American Bridge Co., Shipowners Drydock Company, William H. Radcliffe and Detroit Dry Dock Company. Prominent architectural styles found in Lake Country are .