The grand poobah of Vegas dive bars, the Double D is a short walk from the Hard Rock Hotel and a long, long way from Paradise—although a sign above the door has proclaimed it to be "The Happiest Place on Earth." Delicious decadence prevails here; no wonder it's a fave of world traveler and chef Anthony Bourdain. For the boho crowd, this deliberately downscale bar has everything from great local bands to a satisfying jukebox truly eclectic selections. Our advice: go late, wear black, and try the (fabled) Ass Juice cocktail. Also, don't miss the clever, mostly obscene graffiti; it'll have you guffawing in minutes.