Cities (S01E02)

Title: Urban Transformation Plot: Beginning its service in 1863, the London Underground revolutionized urban transportation by transporting commuters beneath the surface, alleviating the chaos of busy streets. Innovative advancements, such as electric tracks and tunnels crossing the River Thames, set a precedent for rail systems globally. This episode explores the dramatic changes that the rapid growth of the Underground brought to London's once filthy and overcrowded streets.