Tombstone

Once called "The Town too Tough to Die," Tombstone, Arizona was the Las Vegas of its day. In the 1880s, it had the southwest's largest "red light" district and the most gambling houses and saloons, too. Which is probably why it also had the largest "boot hill" cemetery.

And, of course, it's most famous for the Gunfight at the OK Corral when Wyatt, Morgan and Virgil Earp and Doc Holliday shot it out with the Clantons and McLaury's.