A brick foundation and piles of listing building materials are all that remains of this World War II POW camp.

This chain of artificial lakes was an ideal test ground for the aircraft that would carry the "bouncing bombs" used by the WWII "Dambusters" squad.

There are hundreds of secret WWII bases hidden in British forests. Built to fight a Nazi invasion, they remained unknown for decades.

After years of slow decline, a derelict Gothic castle is now being restored to life.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

A nuclear bunker built to shelter the politicians and important people of Scotland in case of nuclear attack.

The longest and tallest aqueduct in Britain can actually be sailed across.

The secret wartime bunker built on the platforms of an abandoned Tube station.

This bridge is the first to be made entirely from iron, but designed like it was still made of wood.

The rotting skeleton of a shoreside fun fair that was destroyed by fire and storms still haunts the Brighton ocean view.

A six-ton wedding present for the King of the Scots.

The elegant structure of this 19th century railroad bridge creates an illusion of infinity.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

This former medical factory gives home to cutting edge arts in the shadow of a gas works.

A whale's jawbone and a malfunctioning harpoon welcome you to the village of Bragar and its lore.

Monty Python fans will recognize this abandoned mine as the Cave of the Killer Rabbit of Caerbannog.

A mysterious bridge over a sunken Roman road.

Museum celebrating the history of computers, especially their role in codebreaking.

Where the sleeping monsters of Scotland's oil industry are left to rust.

A vortex fountain that seems to rise out of the ground.

Hidden on the urban banks of a Manchester river are a series of abandoned waterside industrial sites.

More stones than Stonehenge, all scattered within a windswept landscape sure to enchant 'Outlander' fans.

A remarkable medieval structure born from a 14th-century disaster.

The broken skateboards that became a poignant memorial to a murdered skater.