This site was built in 1957 by the Army Ballistic Missile Agency and was the primary center responsible for the development of Propulsion and Structural Test Facility was built in 1957 in Huntsville, Alabama. The George C. Marshall Space Flight Center was home for testing the first single stage rockets. The Army Ballistic Missile Agency built the Propulsion and Structural Test Facility and is a key player for engine research for NASA. Wernher Von Braun developed The Saturn Family of launch vehicles there. The Saturn 5 remains as the most powerful launch vehicle. In 1985 it became a National Historic Landmark.
source: Wiki -NASA
