Josh explores three locations where people connect with spirits and miracles, from a celebration honoring a mysterious American soldier on a remote Pacific island to portal to the dead in New Orleans.

Josh explores three legendary locations where stone labyrinths hide something incredible, including a vast city carved deep into a canyon in the Jordanian desert and a dark South Pacific cave once used as a kitchen by a cannibal tribe.

Josh explores other great walls around the world, from a cursed fortress along India's Aravalli Mountains to a series of towering metal forks that once defended Britain from the Nazis and were taken over by pirates -- of radio.