I am surprised, but, then not really. People who tend to travel the world will sometimes skip the obvious here in the States. I am totally guilty of that and am in the process of remedying some of that. :)

I am glad you will make the effort to come and actually, there is no bad time to visit, so if you find yourself in the neighborhood before that, just remember that everything they have here (almost everything) is free. All of the Smithsonians, Art Galleries and all of the monuments - plus the obvious, like the White House, Library of Congress, the Capitol, the list goes on!

Come on down! You won't be sorry!