Right by the Statue of Liberty is a fantastic spot to catch the Fourth of July fireworks that go on over the Hudson River. It's one of the most patriotic places to watch it!
Jefferson Mem. Washington Mem. Lincoln Mem. White House. Capitol. Smithsonian. Ford Museum. Kennedy Center. Memorials Tour at night. Gallery of Art. Vietnam Mem. Korean War Mem.
We went to the Empire State Building late at night (maybe 11 or 11:30). We walked down after we saw Jersey Boys. It was perfect because there were no lines....but you could see all the ropes for the queues, and they went on forever!!