San Luis Obispo County California (Vacant / Not In Use) has 5 places on the National Register of Historic Places including 1 place of Statewide significance. Significant places include Powerhouse, The, Dana Adobe, Guthrie House, Old Santa Rosa Catholic Church and Cemetery and Pacific Coast Railway Company Grain Warehouse.
Some of the country's most noteable architects helped create the San Luis Obispo County places including William Weeks, Maino & Son, Willliam G. Dana and Unknwon. Prominent architectural styles found in San Luis Obispo Country are Mission/Spanish Revival.