The Bermuda Triangle vs. Lloyd's of London
As most people know, dozens of spectacular disappearances have occurred in the Triangle that is located off the southeast coast of the United States. The actual area of the triangle is controversial, but most authors agree that it includes at least the area between Miami, Bermuda, and San Juan.
Not only the number of disappearances, but their mysterious natures have impressed paranormal buffs. Wikipedia has an interesting mini-catalogue of some of the most bizarre anecdotes:
In 1881, the Ellen Austin came across an "abandoned" ship in the Triangle -- abandoned why? Because abducted by UFO? Because so terrified, the crew hurled themselves into the water? -- and put some of its own crew on board to sail it to New York.