For decades, the collection had no home worthy of its contents. World War II aircraft were stored in an abandoned factory in Park Ridge, Illinois, and in a Navy facility at Norfolk, Virginia. It was not until 1976, during America's bicentennial celebration, that the museum's present building opened on the National Mall, with former Apollo 11 astronaut Michael Collins serving as its director. The name had been changed to the National Air and Space Museum by President Lyndon B. Johnson in 1966, anticipating the space age. It remains one of the most visited U.S. museums, but no longer holds the top spot, preserving not only the Wright Flyer and the Spirit of St. Louis but the intangible heritage of the men and women who believed that the sky was not a limit but a beginning.