1
Ambrose Bierce, the renowned American author and journalist, disappeared without a trace during his venture into Mexico in 1913, leaving his ultimate fate and the circumstances of his disappearance a mystery.
2
Legend persists of Jacob Waltz, a German immigrant who supposedly discovered the elusive Lost Dutchman's Gold Mine in Arizona's Superstition Mountains, but its exact location and the truth behind the legend remain elusive.
3
In 1887, John Spangler, a prominent cattleman, was shot and killed near Brown's Park in Colorado. Despite extensive investigations, the killer was never identified or apprehended. The murder remains unsolved to this day.
4
The true fate of the Apache Kid, a notorious outlaw and member of the Apache tribe, remains shrouded in mystery due to conflicting accounts of his death and burial.
5
Pat Garrett, the legendary sheriff known for killing Billy the Kid, met an uncertain fate in 1908, with unclear circumstances surrounding his death, including theories of murder and accidental shooting.
6
The former capital of Alabama, Cahawba, declined and vanished by the late 19th century, leaving behind ruins and ghostly remnants that hold a haunting mystery surrounding its abandonment.