The only thing better than a haunted attraction is a haunted attraction on a giant boat. You'll find all the usual horrors here—fog, seven mazes and countless monsters—as well as an icy bar stuffed into the ship's fictional chef's meat locker. What sets Dark Harbor apart is its use of its surroundings; the dark, cramped confines of the Queen Mary are already pretty spooky even without monsters—just be prepared to climb a lot of skinny staircases. There's also an R.I.P. Lounge (see what they did there?) if you're looking for a first-class experience (fewer monsters, more booze, made-to-order taco station). Tip: Arrive before 8pm for $20 "Happy Haunting Hour" tickets.