Summary This episode explores extraordinary technologies from ancient civilizations that were either ahead of their times or forgotten in the ruins of history. This includes the Baghdad Battery, the Antikythera Mechanism, and Stone Balls of Costa Rica and the "Skull of Doom," which appears in the opening credits for the series. Originally broadcast in September 1980, Arthur C. Clarke's Mysterious World brought an innovative approach to exploring natural and supernatural phenomenon. After 13 episodes, the series sadly came to a close. Our team at Gaia diligently pursued the acquisition of Mysterious World in order to save it from obscurity. Gaia is proud to re-present this groundbreaking series and restore the sense of wonder and intrigue that it once brought to our mysterious world.

• Documentary
• Mystery