Hello, I have a 10hr layover in IAD (Washington Dulles) between an international flight and an domestic flight back home. My light gets in around 7am and departs again at 5pm. I know that I have to go threw customs baggage re-check, and security again would it be worth it to leave the airport and see a museum, or catch a movie outside of the airport or would it be better to just stay at the airport do some shopping get a massage or whatever there??? This is my first international flight and i have no clue what to do or what i am supposed to do.