S1 E4 ∙ Kingdom of Salt ∙
The Wieliczka Salt mine in Poland, some 327 metres deep, where the voids left behind from excavating salt have been transformed into extraordinary spaces, carved by hand.
All episodes for series 1 of Underground Worlds
S1 E1 · Gibraltar
Incredible feats of human endeavour, revealing what people have built, where, how and why.
S1 E3 · Switzerland
A look at some of Switzerland's 300,000 subterranean bunkers built across history.
S1 E6 · City of Naours
An underground city beneath a forest in Northern France built to house 3,000 people.
S1 E7 · Jersey War Tunnels
The underground bases built by the German army during the occupation of Jersey.
S1 E8 · The Maginot Line
The secrets of the largest subterranean fortress along France's border with Germany.
S1 E10 · Dover War Rooms
The military headquarters built beneath Dover Castle during the Second World War.
The Buildings That Fought Hitler
Description: This series looks at just some of the buildings that were designed to fight Hitler.; Category: [object Object]; 8 episodes available.
The Architecture the Railways Built
Description: Tim Dunn explores the stunning architecture that lines the railway network.; Category: [object Object]; 40 episodes available.
Guy Martin's Lancaster Bomber
Description: The history enthusiast honours Lancaster bomber crews of the Second World War.; Category: [object Object]; 1 episode available.
Guy Martin's World War 1 Tank
Description: The motoring fan builds a working replica of a First World War tank and drives it at a Remembrance Day parade.; Category: [object Object]; 1 episode available.
How Britain Worked
Description: Guy Martin recreates technical achievements of the 19th century.; Category: [object Object]; 6 episodes available.
Guy Martin's Spitfire
Description: The history enthusiast joins the two-year restoration of a Spitfire that was buried in a French beach.; Category: [object Object]; 1 episode available.
Forbidden History
Description: Jamie Theakston investigates incredible tales from the annals of history.; Category: [object Object]; 11 episodes available.
Recently Added Mega Metro
Description: A tight-knit international team battles to complete Australia's biggest ever tunnelling project in Sydney.; Category: [object Object]; 8 episodes available.
Churchill's Bid to Abolish Britain
Description: This ambitious, striking film challenges our understanding of the Second World War.; Category: [object Object]; 1 episode available.
Smoke & Steel
Description: Examining the Industrial revolution - the age of smoke and steel.; Category: [object Object]; 6 episodes available.
Great British Landmark Fixers
Description: Teams across the country are keeping our heritage standing, these are our landmark fixers.; Category: [object Object]; 6 episodes available.
The Black Panthers of WW2
Description: The story of the history-making 761st tank battalion.; Category: [object Object]; 1 episode available.
