NASA’s Armstrong Flight Research Center in Edwards, California, is NASA’s primary center for high-risk atmospheric flight research and test projects, with access to 301,000 acres of remote land and the Bell X-1 Supersonic Corridor. It integrates research aircraft, flight-test ranges and specialized facilities across high-speed, autonomous, electrified, Earth-science and space-exploration work. The center’s history dates to 30 September 1946, when NACA personnel arrived at Muroc Army Airfield. Armstrong is inside the restricted area of Edwards Air Force Base and has no public visitor center; NASA offers virtual tours for general audiences, while on-site visits or facility tours are programme-, sponsor- or credential-dependent and subject to security arrangements. Confirm NASA and Edwards guidance before travel.