What on Earth?

Strange mounds in Transylvania may lead to the tomb of Vlad the Impaler.

A structure shaped like a giant shark might point to a Fountain of Youth.

A ghost ship with links to the mob suddenly appears on a California beach.

Scientists embark on a dangerous mission to explore an unknown jungle.

A strange forest could be home to a Hobbit-like humanoid species.

A pit of bodies suggests fears of a zombie nightmare in medieval England.

A lost city near Jerusalem might have been the home of a biblical monster.

A mysterious circular structure may be King Arthur's fabled Round Table.

A network of tunnels contains evidence of human sacrifice for a Viking god.

New evidence may reveal the hiding place of a long-lost Nazi fortune.

An ancient volcano might reveal buried treasure and bloody human sacrifice.

Man-made islands are spotted near a North Korean missile facility.

Experts investigate the bloody past of an abandoned city in Kenya.

Experts investigate a glowing lake reported to turn things into stone.

A mysterious structure in Russia might have links to the Nazis.

Investigators search for the Ark of the Covenant in Ethiopia.

New technology might finally locate the untold riches of a lost Inca city.

A ship is found marooned on a remote island with a killer secret.

New evidence might reveal how the Maya vanished.