After the reservation closed, Fort Sumner became the private ranch of Lucien Maxwell, and that’s where Sherriff Pat Garrett shot Billy the Kid in 1881. This museum, alongside, tells the whole gory story, along with ephemera like a stuffed two-headed cow. Beside it you'll find Billy the Kid's Grave , along with that that of Lucien Maxwell. The Kid's tombstone is protected by an iron cage because 'souvenir hunters' kept trying to steal it – even in death he's behind bars.