Cities of the Underworld (2007)

S1E8 London's Lost Cities

London has stood as a dominant force for centuries, but beneath its bustling streets and vibrant markets lies a concealed world. This shadowy realm features ancient Roman baths, clandestine crypts, forgotten waterways, and robust bunkers capable of sheltering 8,000 individuals. Among these hidden treasures are the secret war rooms of Winston Churchill. Join host Eric Geller as he uncovers the mysteries of this subterranean city, revealing the rich and often overlooked history that lies just beneath the surface of one of the world's greatest cities.