In North Wales a secret facility which once manufactured mustard gas and enriched uranium lies in ruins. In Malta is a luxurious quarantine facility, that hides a dark secret.
Ruins of a vast industrial ghost town in the United States, a windswept Scottish island, and the remains of a resort in Japan that watched a city burn.
A real-life concrete jungle in America's 'Rust Belt', British WWII tunnels inside a Hong Kong mountain, a Soviet nuclear facility hidden in a remote Belarus area, and a remote industrial facility that brought energy to Tasmania from water.
A volcanic island just off Taiwan containing chilling ruins from its darkest era, and a miniature railway that lies forgotten in the woods of Arkansas.
Bizarrely-shaped huts in India, once home to global superstars, are now eerily quiet and neglected, and a shattered compound in Colombia linked to a criminal mastermind.
