In every major metropolis, skyscrapers soar into the sky, taxis and hawkers scream in the streets, and subways rumble below. But deeper beneath the busy surface lie other silent worlds, each with its own mysterious and intriguing history.
Underworld peels away layers of time—often hundreds of feet thick, in fact—to reveal the incredible past that lurks beneath some of the most populous cities on Earth.
Around the world, cities such as Paris, New York, Rome and Shanghai host long-submerged networks that once served vital functions, from eerie catacombs to secret lairs, ancient aqueducts to underground societies.
Underworld Cities examines these mysterious realms, from the technological advancements that built them to the myths and legends that have shrouded these subterranean wonders for centuries.
Using high-definition footage from rare locations, the History Channel reveals a world of mystery and mystery beneath the surface we walk on.
