Engineering an Empire - The Byzantines

As much of the world descended into the Dark Ages after the fall of Rome, one civilization shone brilliantly: the Byzantine Empire. With ruthless might and supreme ingenuity, the Byzantines ruled over vast swaths of Europe and Asia for more than a thousand years. It was Byzantium that preserved the classical learning and science that would one day give rise to the Renaissance. The Byzantines constructed the ancient world's longest aqueduct, virtually invincible city walls, a massive stadium, and a colossal domed cathedral that defied the laws of nature.