Well, I brought up DC and she shrieked! lol. "I don't want to learn anything on vacation! It's supposed to be a vacation!"
I talked her out of the Atlantis idea because of the price, and the fact that we can probably take two trips instead of just one for that price. She decided she wants to go to Disney World or whatever is in Orlando to the Harry Potter park. I had solemly sworn that I would never submit myself to the torture of Disney theme parks, but I guess if it makes her happy.
Thank you all for the suggestions! When I was growing up, my parents always took us to a historical site, and also had activities for us kids. I loved our vacations, and managed to learn a lot. Not so with my daughter lol. Oh well!