19. 7B (Horsehoe Bar, or Vazac's)
Neighborhood: East Village, Manhattan
Address: 108 Ave. B
Any place that acted as a location for The Godfather Part II must be a national landmark, right? It must be well-preserved, roped off with velvet, dusted to suggest its cultural merit? Nope. It's a dive. And a messy dive at that, especially with regards to architecture. More than any other dive on this list, Horsehoe is a maze. We dare you to find the men's room on the first try. Between the punk blaring from the jukebox and the tall cans of Labatt Blue, you'll pass it more than once working through this U-shaped marvel. Don't piss your pants.