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Unearth the remarkable yet overlooked engineering inventions of the past. This episode unearths hidden mysteries from neolithic wells to underground channels through the desert in Ancient Persia, and the cavernous underground cisterns of Constantinople. Discover the history of domes and how they spread from the Middle East across the globe. Explore the reasons why the Incas built farming terraces across varying altitudes and delve into the hidden genius of an ancient Greek amphitheatre. Finally, explore how these ancient breakthroughs have led to modern feats of engineering. From giant gas platforms taller than the Empire State Building, to an environmentally friendly glass dome now an icon of Berlin’s skyline, and the struggle to find acoustic perfection in one of the most famous concert halls in the world.