Designed by National Park Service Architect Cecil Doty and built by the Civilian Conservation Corps between 1937 and 1939, the Old Santa Fe Trail Building is recognized as one of the best examples of Spanish Colonial/Pueblo Revival architecture in the Santa Fe area. From 1939 to 1995 the building served as the National Park Service's Region III/Southwest Region headquarters and currently houses various programs of the Intermountain Regional Office as well as the National Trails program.