A succession of eerily contemplative iron figures lead from a Scottish museum to the sea.

This lonely cast-iron structure is the only wave-washed lighthouse of its kind left in all of Britain.

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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

This overlooked street light once served as a KGB dead letter box.

This Welsh village gave itself a ridiculous name in a publicity stunt a century ahead of its time.

Near Birmingham, England three and a half miles of top-secret tunnels housed a World War II “shadow factory” and a Cold War nuclear bunker.

The only fixed chain and post trail in Scotland snakes its way along the base of a towering seaside cliff.

One man spent 10 years building a spectacular section of road because no one else would.

The wooden telephone box hidden away in London's Piccadilly was the original prototype of the iconic kiosk.

This huge concrete map of Scotland was built as a thank you gift from a Polish soldier.

Legend says a witch conjured the world's third largest whirlpool to protect Scotland from a nasty pirate.

Human-made caves excavated to hide a secret society of wealthy pagans.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

These lovely Turkish-styled baths were brought back to life after winning a reality show competition.

A meandering boardwalk across the bogland leads to a "stairway to heaven" with sublime views.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

The ghosts of Britain's telecommunication past sit rusting away in a small village in England.

Summer in Scotland begins with a spectacularly wild and colorful event rooted in ancient pagan traditions.

Follow the original medieval paths that wind through this intriguing section of the city.

Long abandoned underground complex to keep royals safe from a nuclear war that never came.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.