Expedition Unknown

Josh traces the Vikings' westward expansion from the volcanic landscape of Iceland to a mysterious settlement in Greenland and into North America. He aims to find out if they landed in the United States before any other Europeans.

Josh investigates how a group of Norse tribesman gained power in medieval Europe. His search for answers begins in their one-time home base of Denmark and continues on to the first place they expanded off the continent -- Iceland.

Josh rides into the Wild West to hunt for Butch Cassidy's missing money. He traces the outlaw's footsteps through Colorado, Utah and Nevada, eventually learning that he may need to find the man himself to locate the lost loot.

Josh ventures into the ancient Maya city of El Mirador in search of the lost tombs of a mysterious ruling dynasty called the Snake Kings.

Josh travels to his ancestral home of Great Britain to explore the origins of the mystical monument of Stonehenge.

Josh travels all over the US to find the treasures featured in The Secret, a 1980s book filled with devilishly difficult riddles and puzzles that have stumped treasure hunters for over three decades.

Josh travels to India in search of Dwarka, a mythical kingdom swallowed by the ocean. To find evidence that the golden city is real, he dives into the Arabian Sea and visits a dig site that could rewrite history.

Josh travels to Italy in search of what may be history's richest treasure -- the looted relics of the Roman Empire interred with the Visigoth king Alaric.