Have you been to DC? If not, and have to do it rather quickly, try one of the bus tours that go to the momnuments. You will get to spend a little time at each one.
There are SO many things to see in DC. We have been there 3 times, and still have more to see.
Have a safe and grand trip! Take pics for all of us to see!
And Ginny Beyers place is close to DC if you like her things ( I have to admit, I was a little disappointed, but that is just me)