A fabulously bizarre surrealist sculpture by the late artist Leonora Carrington.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

This Oaxacan town is known for its colorful fantastical creatures hand-carved by local artisans.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

This often-overlooked ocean walkway was once considered an impossible fantasy.

A small pack of an ancient, hairless breed of dog once believed to guide souls through the underworld lives on its grounds.

This extraordinary art museum is like a secret world on the edge of Mexico City.

Mining, a local filmmaker, and a philanthropist doctor all commemorated within a small space in suburban Edinburgh

Centuries of human activity have forged an eerie landscape of ruins and craters on an exposed and windswept hilltop.

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Vibrant paintings stretch across 600 feet of derelict railway.

Climb this overlooked gem's spiral staircase and you'll be rewarded with spectacular views of Glasgow.

A scattered trail of street art adds a pop of color to the city's stark structures.

Largest lake in Great Britain measured by surface area.

The heads of two giant mythological water horses honor Scotland's horselord past.

This series of Scottish caves has no clear purpose other than baffling historians.

A pub that is literally in the middle of nowhere, but continues to do business.

An American ghost town hides along a side street in Scotland's capital.

A grove of colossal man-made flowers built to collect the sun's rays.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

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

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.