Legend has it that the devil itself built this portal on a dare.

Can you see the face staring out at you from the buttress of this bridge?

It's believed that the dead were once taken out of houses through these now walled-up doors.

This Volcano-like rest area was designed by architect Giulio Ceppi built according to energy efficiency and ecological footprint standards.

Hundreds of plague victims were buried beneath this small, rural church.

A quartet of tiled art pieces adorn the floors of this prestigious art museum.

Does this 10-foot-tall statue carved into a rock face depict a king afflicted by a skin condition or a Buddhist figure?

The ghostly remains of a gunpowder mill lost in 70 hectares of thick woods.

The second largest monolith in the world was once betrayed by its lover, Ben Aicha.

The legendary fortress of a female Kurdish warrior leader.

Wander through a maze of empty tombs to find the poles used to hang revolutionary patriots.

Acrosticism and palindromes on this randomly placed stone.

A pair of oily black spiders lurk inside South Korea's largest airport.

An expansive collection of vehicles and other paraphernalia marking the history of firefighting.

This lavish 20th-century casino adorns labels for San Pellegrino water.

The haunting remains of a World War I fort perched atop a mountain.

Exchange a book at the entrance of this medieval Lovere alley.

Liechtenstein's royal family calls this medieval alpine castle home.

This monastery built into a cliff hides a perfectly preserved hermit in a glass coffin.

One of Ayutthaya’s most iconic locations is a mysterious, hauntingly surreal miracle.

Angels and demons watch over newspapers in this deconsecrated church.

These abundant, over-the-top monuments are so widely scattered that they define the entire compact capital cityscape, often leading to jokes about whether there are more statues than residents.

An ancient cemetery hides behind a line of disparate chapels.

Beautifully decorated tarot cards from the Middle Ages.