The Smithsonian offers eleven museums and galleries on the National Mall plus six other museums and the National Zoo in the greater National Capital Area. They are all free to visit!
The National Mall extends from the Washington Monument to the Capitol Building and touches many other historic memorials like the Lincoln Memorial and the Thomas Jefferson Memorial.
If you have time, try to catch a performance at the Kennedy Center!
Catch a NBA or NHL game to see the Washington Wizards or Capitals in the Capital One Arena located in the Gallery Place/Chinatown neighborhood.
Cute historic area with great places for shopping and eating. We got engaged on the Waterfront!
Nice restaurants and bars, this is the area for a fun night out. We met not too far from here!
Washington DC is a big brunch town (and foodie town in general). Many restaurants around the DMV (DC, Maryland, Virginia) area host brunch specials on the weekends often including bottomless drinks. You can't go wrong!