National Park Service

The National Park Service Southwest Regional Office, also known as National Park Service Region III Headquarters Building, is located at 1100 Old Santa Fe Train in Santa Fe, New Mexico. The office provides support services for Park Service properties throughout the intermountain region of the American Southwest. The building, designed by NPS architect Cecil J. Doty, it is a traditional adobe building, built the 1930s by crews of the Civilian Conservation Corps. It is the largest adobe office building in the nation, and a masterpiece of Spanish Pueblo Revival architecture. It was designated a National Historic Landmark in 1987. It is open to the public during normal business hours; tours are not normally given.