ReturningNational Geographic2026-04-24

Hidden Beneath the Cities

Name: Hidden Beneath the Cities
Genre: Documentary
Released: 2026-04-24

Documentary

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Episodes

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National Geographic

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First aired

2026-04-24

Last aired

2026-05-22

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Synopsis and details

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.

Seasons and episodes

Season 1

10 episodes · 2026-04-24

Hidden Beneath the Cities 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 centres, from the tombs and wartime shelters of Naples to the man made Royston Cave in Hertfordshire, England.