Abandoned Engineering

A settlement in Argentina destroyed by floods, a town in the US that has been erased, and a Soviet dream-town that turned into a nuclear nightmare.

A seemingly endless concrete line stretching through the French countryside, which sits as a monument to a discarded engineering advancement.

A little-known dark past explains the vast monolithic structures that dominate the small British island of Guernsey.

Projects include a maze of tunnels filled with haunting remains beneath the streets of Paris and a formation of domed structures hovering over the waters off the Florida coastline.

A West Virginia town that fell victim to change when steam trains became obsolete and an underground complex in Italy that'd been abandoned for nearly 2,000 years.

A ruined compound on the edge of a peninsula in Colombia which was once home to a famous outlaw and the strange towers looming over red-tinted waters in a Portuguese landscape.

A formerly luxurious and strategic mountain-top villa on the island of Rhodes in the Mediterranean that's been ravaged by acts of revenge by locals since 1955.

A town with a supernatural atmosphere, a collection of imposing buildings in southern Australia, and the remains of curious-looking basins emerging from the waves.

Ruins include a covert Communist base that hid Cold War submarines for Tito and the former HQ of the Soviet Army in East Germany.

A sprawling Wild West ghost town sits peaceful and abandoned in Montana, USA, but is still haunted by tales of murder, corruption an buried treasure.

A vast project in the wilderness of southern Alaska, and a landscape of confusing structures that represented a bold statement of Spain's plans for the future.

A pioneering complex marked by both glory and tragedy that's soon to be lost forever, and towering remains from an industrial age.