Three Dollar Dewey's has been the most steady bar in the Old Port. Open since 1982 along Union St. operates one of the longest tap lists in Portland. Open layout to the bar, brick archways leading from one half to the other. They accommodate large parties easy, and serve your basic pub style food along with a lot of good micro brews. I like that they have Bar Harbor Coal Porter on tap, which is not typically found anywhere in town. Really, this place is about as standard as an Old Port bar goes and I don't see anyone being disappointed with their space.