Lyon Hall
Where: 3100 Washington Blvd., Arlington (Clarendon)
When:Â Happy Hour 3-7 p.m. daily (plus Oyster Mondays)
At this Clarendon brasserie, you can slurp the raw bivalves to your heart’s content on Mondays, when the kitchen offers dollar oysters (with housemade mignonette) all day. Or, stop by happy hour any other day of the week (3-7 p.m.) for $1.50 oysters and other specials.