An aviation museum, the Udvar-Hazy Center is home to a collection of aviation and aerospace artifacts

For decades Washington's National Air and Space Museum has been among the city's top tourist attractions. It is an impressively large building - located within sight of the U.S. Capitol Building - and operated by the non-profit Smithsonian Institution, which manages the collection. But in spite of its spacious proportions, the museum had - for years - been able to display only about 10 percent of the Institution's vast collection. VOA's George Dwyer reports another even larger facility was opened four years ago. Jim Bertel narrates.