This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

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

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This ancient subterranean megalopolis is known for the hot oil traps that were installed above each of its entrances.

Once described as the "Eagle's Nest," this ruined ancient city rests on a remote mountaintop.

There has been an astronomical clock on this spot since the 14th century.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This collection of lurid religious statues tell the tales of a saint who stood down the devil.

The tiny Belgian town's ancient version of Mardi Gras involves eerie wax masks, sticks for warding off evil, and ostrich plume hats.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

This Navarrese cave's history of witchcraft and pagan ritual is not just embraced, but recreated each year.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Christ's blood allegedly preserved in a Belgian town.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

With a history of slaughter, feast, and famine, remnants of the pork industry decorate this area--even its church.

A haunting collection of the vanished and disappearing natural world.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

The celebrated eyesore created by starry-eyed sweethearts.