The highest peak in all of England is plagued by dangerously fickle climate shifts.

The monster at the center of the Darwin Center Spirit Collection.

This huge metal monument is slowly being stripped to its concrete skeleton.

Yugoslavia's biggest underground airport lies in ruins.

This former estate of a fascist leader is now a burnt out ruin leading to a system of secret tunnels.

Once a state-of-the-art tuberculosis treatment spa, these ruins are now ruled by paintball players.

The remains of centuries of copper mining appear like an alien landscape.

The world's largest prehistoric copper mine had 30,000 animal bones scattered throughout the maze of passageways.

A subterranean playground in an abandoned slate mine.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

One of the world's tallest flagpoles.

A delightful architectural wonder awaits on a lake island in Kuala Lumpur’s oldest park.

Hang out with thousands of butterflies in one of the world's largest such enclosures.

An interactive back-alley mural project remembers the golden age of Kuala Lumpur’s Chinatown.

Kuala Lumpur’s historic single-screen cinema, transformed into a labyrinthine bookstore.

The house in the middle of the motorway.

On a site with a long military history, a 1980s shelter.

The longest cutting on the M62 contains some surprises—though it's best to leave the motorway to appreciate them.

A creepy tree with a local legend that inspired a nearby theme park ride.

One of the U.K's earliest public water supplies is within the "plague village."

Eyam took steps to quarantine themselves and keep the plague from spreading.

This massive memorial commemorates those who died in the Manchester Arena bombing.

Over 70 independent businesses have set up shop in this former Victorian department store.

One of the trees in Manchester’s Piccadilly Gardens is actually a World War II memorial, and it's made of metal.