High Quality Content by WIKIPEDIA articles! The Saddlehorn Utility Area Historic District in Colorado National Monument comprises a complex of park service buildings, designed by the National Park Service Branch of Plans and Designs in the National Park Service Rustic style. The primary designer was National Park Service architect Kenneth M. Saunders, who employed the local red sandstone in the buildings, which included shops, fuel shed, repair and storage buildings. The buildings were constructed in 1941 by Public Works Administration and Civilian Conservation Corps labor.