The hit documentary series that explores some of the world's most mysterious abandoned structures returns for an all-new second series.
Once these structures were among the most advanced engineering projects ever undertaken, but now they lie ruined, disused, and sometimes deadly. Each episode of this fascinating and fast-paced series uncovers the stories behind their rise and fall and asks 'who built them? And why? And why were they abandoned?'
Hear how the Politz synthetic fuel plant in Poland, now a derelict site, was once central to Nazi Germany's drive to become self-sufficient on fuel.
The creation of a set of Second World War sea defences built near the mouth of the River Thames to protect London. Plus, a concrete pyramid build during the Cold War.
Hear the fateful story of the disused Vajont Dam in Italy, the site of a tragic disaster in 1963 which resulted in the deaths of around 2,000 people.
Learn about the strange-looking, derelict military facilities in Farnborough, which were once wind tunnels that played a vital role in WWII.
The Canfranc Railway Station is a large and elaborate abandoned Nazi railway station in the Spanish Pyrenees. Why was it built?
Henry Ford's Fordlandia Rubber Town has been left to rot in the Amazon Rainforest, but it was once a symbol of the American dream.
The Georg Thiele was a technological masterpiece, but now it is a shipwreck, lost to the sea after running aground during a naval battle in WWII.
Hidden in the Brazilian jungle is the Petrobras Viaduct, an extraordinary highway that seemingly leads nowhere. Who built it and why?