H Street Country Club for mini golf and giant bar games. Axe throwing. St Vincent's for wine tasting. Arboretum for fun outdoor activity and great pictures.
Just because I did it recently - Lulu's wine bar is good for a large group and you can get bottles of good natural wine for the table! It's in the heart of the U Street area too.
scotch_please t1_j9hhnsb wrote
Dan's Cafe (unironically).