The incredible design of the famous Sutton Hoo helmet, one of Britain's most famous treasures, could potentially reveal a lot about a long lost Roman helmet from centuries before. Ancient Impossible reveals how many of today's technological achievements were actually developed centuries ago. Colossal monuments, impossible feats of engineering, and technologies so precise they defy reinvention. The ancient world was far more advanced than we ever imagined. We’ll travel through history to reveal a radically different picture of the past, with innovations so far ahead of their time, they’re still in use today.