Pitkin County Colorado (Historic Districts) has 5 places on the National Register of Historic Places including 2 places of National significance and 2 places of Statewide significance. Significant places include Redstone Historic District, Soldner Home and Studio, Independence and Independence Mill Site and Redstone Coke Oven Historic District and Holden Mining and Smelting Co..
The famous person John Cleveland Osgood is associated with one of more of the Pitkin County historic places.
Some of the country's most noteable architects helped create the Pitkin County places including Theodore Davis Boal, Colorado Fuel & Iron Co. and Hunt & McDonald Stonework. Prominent architectural styles found in Pitkin Country are Queen Anne and Tudor Revival.