The Colorado State Register of Historic Properties is a listing of the state’s significant cultural resources worthy of preservation for the future education and enjoyment of Colorado’s residents and visitors. Properties listed in the Colorado State Register include individual buildings, structures, objects, districts and historic and archaeological sites. The Colorado State Register program is administered by the Office of Archaeology and Historic Preservation within History Colorado. History Colorado maintains an official list of all properties included in the Colorado State Register. Properties listed in the National Register of Historic Places are automatically placed in the Colorado State Register. They may also be nominated separately to the Colorado State Register without inclusion in the National Register.