Minnesota - St. Louis County - Vacant / Not In Use
St. Louis County Minnesota (Vacant / Not In Use)  has 12 places on the National Register of Historic Places including 6 places of Statewide significance. Significant places include Bruce Mine Headframe, Hill, Matt and Emma, Historic Farmstead, Minnesota Point Lighthouse, Pioneer Mine Buildings and A Headframe and Seitaniemi, Alex, Housebarn. 
Some of the country's most noteable architects helped create the St. Louis County places including  Donald McKay, International Harvester, Matt Hill, Alexi Seitaniemi, Haglin,Charles F., & Sons, Oliver Mining Company, CCC and  Adolph F. Rudolph. Prominent architectural styles found in St. Louis Country are Romanesque, Renaissance and  Tudor Revival.