Albert Lin travels to the modern city of Acre, Israel, searching for the lost fortunes of the mysterious Knights Templar - warrior monks who ruled the Holy Land through blood, God, and gold. Using LiDar, Lin investigates the hidden Crusader city and the secret tunnels that lie beneath it, mapping them for the very first time to discover their lost world, their gold, and the secrets that made them so ruthlessly successful.

Albert Lin travels to Colombia to find out the truth about the legendary city of El Dorado. He explores the ruins of Ciudad Perdida in the Sierra Nevada mountains.