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Watching: Hidden Beneath the Cities
0.0•2026-04-24•1 Seasons
Season 1
Episode 3
Seasons
Episodes
EP 1
Underground Cities and Secret Chambers
EP 2
Crystal Cathedrals and Buried Bunkers
EP 3
Hidden Hypogeum and Lost Letters
EP 4
Tunnels and Tombs
EP 5
Labyrinths and Legends
EP 6
Subterranean Secrets and Forgotten Foundations
EP 7
Buried Battleship and Viking Victims
EP 8
Bones Beneath and Coffins & Coins
EP 9
Subterranean Seoul and Railway Revealed
EP 10
Secret School and Concealed Castle Cemetery
Overview
Uncovers the extraordinary worlds lying just below modern urban centers. Beneath the streets of stone, soil and concrete exist hidden realms shaped by survival, ritual and imagination. Uncovers the extraordinary worlds that exist beneath major urban centers, from the tombs and wartime shelters of Naples to the manmade Royston Cave in Hertfordshire, England.