While most people think of San Francisco as a haven for peace-loving hippies, this city by the Bay is actually one of the biggest military defense installations in America. Go beneath its picturesque hills and uncover the biggest ammunitions depot on the West Coast before plunging into a deadly arsenal that once stored nuclear missiles with more than six times the destructive power of the atom bomb dropped on Hiroshima. From the secret Civil War fortification buried beneath Alcatraz to the human trafficking tunnels winding below Chinatown, San Francisco's underground is evidence of its sordid past.

Episode Viewers and Ratings

Season 3 Episode 10 of Cities of the Underworld resulted in a 0.00 rating in the 18-49 demographic.

Cities of the Underworld Season 3 Episodes...

• s03e01 - City of Blood
• s03e02 - Tunnels of Hell
• s03e03 - Real Mafia Underground
• s03e04 - Secret Sin City
• s03e05 - Hitler's Trenches
• s03e06 - Barbarian's Lair
• s03e07 - Land of Manson
• s03e08 - Gladiators: Blood Sport
• s03e09 - Secret Holy Land
• s03e10 - Under the Rock
• s03e11 - Tomb of the Lost Mummies
• s03e12 - Gods of War
• s03e13 - Alcatraz Down Under: Sydney, Australia

Cities of the Underworld Show Summary

Peel back the layers of history with hosts Don Wildman and Eric Geller, as they explore underneath the cities of the world to find the hidden engineering feats and dark histories buried beneath. Travel though a maze of tunnels, hidden water supplies, hideouts, and tombs lost to time.