While you are in town, be sure to go to the College Park Air Museum.
It's easy to find. Just follow the Rt 1 Metro signs or take the Metro.
Great museum without the hassles of the Dulles Smithsonian. Nice
restraunt on the field too.

Also, if you think you might be flying yourself into DC again, while you
are at College Park you can pick up the paperwork procedures for being
vetted into the DC3. You'll need to make a trip to National Airport and
one of the local FSDOs, but you'll be able to fly yourself into
College Park and catch the metro from there on future trips.

Helen