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WATCH NEWEST EPISODES
S4 E1 - Mayan Apocalypse
S4 E2 - America's Military Underground
S4 E3 - America's Unmapped Murder Tunnels
S4 E4 - America's Ancient Ancestors
S4 E5 - The Pirate Queen's Lair
S4 E6 - Templars and The Founding Fathers
S4 E7 - Secrets of the Ancient Metropolis
S4 E8 - The Lost Aztec Colony
Streaming, rent, or buy Cities of the Underworld – Season 4:
Currently you are able to watch "Cities of the Underworld - Season 4" streaming on Viaplay, Allente.
Synopsis
Descend hundreds of feet below the streets to explore the remnants of past civilizations.
