The national memorail day concert takes place on the lawn in front of the U.S. Capital Building on the day before Memorial Day. You can bring blankets, chairs, snacks, etc. and listen to free performances by the National Symphony Orchestra, various military bands, and other artists. The event is free, but allow 30 minutes to pass through secret service security checkpoints.
A great restaurant and D.C. institution! This Georgetown tavern is where John F. Kennedy proposed to Jacqui Kennedy. Be sure to ask for their historical pamphlet and take the self-guided tour of famous Georgetown townhomes afterwards.
Just a nice place to walk around by the water after a tour of the national mall.