Aside from a brief stint as a war ship in World War II, the RMS Queen Mary served as a luxury ocean liner from 1936 to 1967. During that time, it was the site of at least one murder, a sailor being crushed to death by a door in the engine room, and children drowning in the pool. The city of Long Beach purchased the ship in 1967 and turned it into a hotel, and it still serves that purpose today—although the reported ghosts of the deceased passengers get to stay for free. (For an extra dose of spine-tingling experiences, see if you can visit the ship’s engine room, which is considered by many to be a “hotbed” of paranormal activity.)