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Underground Worlds

  • 2 Series
  • 20 Episodes
  • Category: Engineering
  • High Definition available
  • Subtitles available

Incredible feats of human endeavour, revealing what people have built, where they've built it, how and why.

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Series Selector for Underground Worlds

All episodes for series 2 of Underground Worlds

  • S2 E1 · Murder Raid Tunnels

    Exploring the extensive air raid tunnels hidden beneath Ramsgate.

  • S2 E2 · Grand Canyon's Lost Treasure

    Exploring inside the Grand Canyon Caverns - North America's largest dry cave system.

  • S2 E3 · Cincinnati's Secret Caverns

    Exploring the forgotten underworld hiding beneath the streets of Cincinnati, USA.

  • S2 E4 · Hotel Bunker of the Apocalypse

    Exploring the secret, Cold War US government bunker hidden under Greenbrier Hotel in West Virginia.

  • S2 E5 · Mystery of the Kentucky Cave

    Exploring the vast 400-mile Mammoth Cave in Kentucky, USA.

  • S2 E6 · Ireland's Underground Alcatraz

    Exploring hidden defences that have kept Cork Harbour, in Ireland, safe for many years.

  • S2 E7 · Medieval Maze of Secrets

    Exploring tunnels beneath Exeter that were built in medieval times to protect the city.

  • S2 E8 · Buried Lab of the Black Hills

    Exploring a former gold mine turned scientific laboratory in South Dakota.

  • S2 E9 · Subterranean Silo Survival

    Exploring old tunnels in an abandoned tin mine beneath the moors of Cornwall.

  • S2 E10 · Italy's Subterranean Secret

    Exploring the caves beneath the beautiful city of Orvieto in Italy.

  • The Buildings That Fought Hitler

    Description: This series looks at just some of the buildings that were designed to fight Hitler.; Category: Military & War; 8 episodes available.

  • Guy Martin's Lancaster Bomber

    Description: The history enthusiast honours Lancaster bomber crews of the Second World War.; Category: Military & War; 1 episode available.

  • The Architecture the Railways Built

    Description: Tim Dunn explores the stunning architecture that lines the railway network.; Category: Engineering; 40 episodes available.

  • Guy Martin's World War 1 Tank

    Description: Guy builds a working replica of a WWI tank and drives it at a Remembrance Day parade.; Category: Factual Entertainment; 1 episode available.

  • How Britain Worked

    Description: Guy Martin recreates technical achievements of the 19th century.; Category: Engineering; 6 episodes available.

  • Guy Martin's Spitfire

    Description: Guy joins the two-year restoration of a Spitfire that was buried in a French beach.; Category: Engineering; 1 episode available.

  • Forbidden History

    Description: Jamie Theakston investigates incredible tales from the annals of history.; Category: History; 11 episodes available.

  • Could Hitler Have Been Stopped? The Politics Of Appeasment

    Description: Two-part documentary considering how Hitler could have been stopped.; Category: Military & War; 2 episodes available.

  • Hitler: Countdown to War

    Description: An intriguing look at the countdown to World War II through the eyes of Adolf Hitler.; Category: Military & War; 3 episodes available.

  • Empire with Michael Portillo

    Description: The story of how a small island on the edge of Europe built the biggest empire.; Category: History; 4 episodes available.

  • Hitler's Supercars

    Description: The rise of Nazi Germany's speed record cars of the 1930s.; Category: History; 1 episode available.

  • Mega Metro

    Description: An international team works on Australia's biggest ever tunnelling project in Sydney.; Category: Engineering; 8 episodes available.