Series 3

01 The Desert Ghost Fleet Episode 126th March 2019 The programme looks at a mysterious group of rusting ships stranded in an arid desert, a monstrous defensive line on the snow-covered peaks of the Italian Alps, a ghostly collection of buildings, and the sunken remains of a unique vessel. 02 The Underwater Prison Episode 22nd April 2019 An abandoned prison beneath the water, a tunnel in the heart of a mountain, concrete towers hidden in the woods and a rusting coastal relic. 03 The Siege Of Sarajevo Episode 39th April 2019 Concrete channels hidden in a mountaintop forest, a collapsing bridge, a marooned military base and the upright rusting carcass of ship. 04 Sabotage in the Mountains Episode 416th April 2019 A towering structure with an explosive past, a deserted cityscape, a mysterious top-secret facility and a vast Nazi construction. 05 Germany's D-Day Fortress Episode 523rd April 2019 A devastated cliff-top ruin, an extraordinarily tall tower, a concrete structure stranded at sea and a heavy metal monster in a field all feature. 06 Hitler's Wonder Weapons Bunker Episode 630th April 2019 Hidden tunnels that saw a city prosper, a sunken wreck with a remarkable past, a concrete wartime dome and a mysterious Cold War building. 07 A Ghost Town In Spain Episode 77th May 2019 A village ruin, pitted and scarred, a ghostly fleet of ships, a bridge to nowhere hidden in a forest and strange metal structures in a wood. 08 England's Abandoned Village Episode 814th May 2019 An eerie, empty country village which hides a sad secret, a mysterious tower battered by the elements and a disused railway deep beneath the streets of a city.