So much has happened to Washington Dulles International Airport since President John F. Kennedy dedicated it in 1962.

The airport, located on 12,000 acres in Loudoun and Fairfax counties, recently underwent a multi-million dollar expansion, adding a fourth runway, expanded gates and buildings, and a new airport traffic control tower. In addition, local government bodies recently signed on to build Metro's Silver Line, which includes a stop at the airport. About 23 million travelers visit Dulles Airport annually, and that number is expected to continue growing.

The main terminal is unmistakable – architect Eero Saarinen called it the best building he'd ever designed – and as such has appeared in movies like Airport, Die Hard II and Body of Lies.

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