734 S. Broadway, Fells Point
The big sign on the side of their building says "Eat Bertha's Mussels" and that's definitely the thing to do at Bertha's. All manner of mussels - just butter or garlic butter, butter and capers, sour cream and scallions, anchovy tomato and garlic butter, and a few more ways. I started with crab soup and washed it all down with a stein of local brew.
I guess you could drive to Bertha's, but it's more fun to hop the water taxi and get off at the Fells Point landing. Bertha's is on the corner about a block from the landing.