San Miguel County Colorado has 6 places on the National Register of Historic Places including 1 place of National significance and 3 places of Statewide significance. Significant places include Telluride Historic District, Fort Peabody, Lewis Mill and Smuggler-Union Hydroelectric Power Plant and Rio Grande Southern Railroad Trout Lake Water Tank.
Some of the country's most noteable architects helped create the San Miguel County places including Charles Maxwell, Rio Grande Southern Railroad, Otto Beselack and Walter L. Reed. Prominent architectural styles found in San Miguel Country are Gothic Revival and Late Victorian.