This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

A charming Amazigh village carved into a mountaintop.

A former salt mine is now a cool picnic spot for families and asthmatics.

One of the most exquisite Lycian hilltop citadels in Turkey.

Seven early Christians were sealed into a cave where legend has it they slept unharmed for centuries.

A mysterious ancient cemetery with Roman sarcophagi and Lycian inscriptions.

At this ancient settlement at the foot of Mount Babadağ, honeycomb tombs are carved into a round cliff.

The ancient abodes are a testament to human ingenuity amid harsh climates.

The largest Neolithic ruins in the world hide a notably clean prehistoric metropolis.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

This hunter-gatherer architecture is believed to be the oldest religious complex known.

The ornate miniature mansions were built for Istanbul's feathered residents.

A Lycian city of the dead carved into the hillside of Southern Turkey, complete with startlingly human touches.

A marvel of Byzantine engineering under the streets of Istanbul.

This former community granary is now a lonely mountaintop shrine.

Hidden behind mountains in Morocco, a remote town hides a thriving surfing community.

Within the Dadès Gorge, amazing vistas and towering cliff faces can be seen at each new curve and bend in the road.

A mud brick kasbah with a history of lavishness and traitorship.

An eerie former warehouse turned cistern turned movie set.

The courtyard of this small Marinid madrasa is a dazzling example of intricate Islamic architecture.

Crumbling necropolis set high above Fez.

Traditional 11th-century outdoor tannery.

Mosaics, storks, and brothels—this ancient city has it all.

Deliberately hidden for centuries, the magnificent Saadian Tombs were eventually uncovered in 1917.