An Aztec king's glittering treasure vanishes into thin air, inspiring a 500-year search that spans continents. What really happened to Montezuma's lost treasure?

Most people know it as the biblical birthplace of man: The Garden of Eden. But is the Garden of Eden really just a story to explain human creation? Or could it be a real place?

Over seven hundred years ago, a medieval religious order protected a vast treasure of gold silver, precious gems, and religious relics... and then it all mysteriously vanished. What happened to the secret hoard of the Knights Templar?

The haunting image of the Shroud of Turin has captivated millions around the world. But what exactly is it that we are seeing, and how did it come to be?

It's a mystery from the golden age of piracy. In 1698, Captain William Kidd raids a ship on the high seas and seizes its vast treasure...but Kidd is hanged before revealing where he stashed the loot.

A perfectly masterminded plot leads to the most brazen prison break in American history. With only a handful of clues left behind, the search for the infamous Alcatraz escapees continues to this day.

On February 24, 1942, less than three months after the Japanese bombed Pearl Harbor, military radar picks up what appears to be enemy aircraft over Los Angeles.

With 500-year-old secrets, hidden in skeletons and stone, Machu Picchu is one of the most puzzling archaeological sites on earth. It's among the ancient world's most enduring riddles: Who built this astonishing complex, and why?

The death of one of history's most enigmatic rulers-Egypt's King Tutankhamun-remains shrouded in mystery 3300 years later. Who, or what, killed King Tut?

For decades, experts believed they knew what caused the Hindenburg disaster: that leaking hydrogen ignited, causing the airship to burst into flames. But there may be more to this story. What caused the Hindenburg Disaster?

The story of the most celebrated warrior king in history still stirs fascination more than 2,000 years after his death. But the location of his body is the subject of much debate.

The Titanic's tragic story captures the imagination of the public and experts of all kinds, who-decades after the ship's demise-still seek answers. Can new evidence reveal more about how-and why-the Titanic sank?

The search for the most famous gold mine in the Old West has led many to perish in the pursuit of its elusive riches. But where exactly is the Lost Dutchman's mine?

Five years after John F. Kennedy is killed by gunshot, his brother Robert meets the same fate. An assassin's bullet again changes the course of history, and the latest clues in the case are riddled with inconsistencies.

A notorious tragedy leads to one of the darkest chapters in early American history. In 1692, fear rips through the small town of Salem, Massachusetts. Accusations fly and many people are put to death.