A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

Cursed swimming pool left abandoned is now a favorite of filmmakers and ghost hunters.

Remote ruins of a 2,400-year-old Iberian settlement.

700 iron sculptures crammed into a Mediterranean park.

These striking ruins of a castle resemble a ship's stern.

An enchanting monastery in the Spanish countryside appears lifted from a fantasy tale.

A Spanish forest is filled with mysterious stone carvings.

Of course Salvador Dalí lived in a castle...

Giant eggs, walls of bread, and nightmare surreality mark the largest collection of works by Salvador Dalí.

At the foot of a waterfall lies a peaceful swimming lagoon and evidence of over 60,000 years of human habitation.

Small French town or alien garage?

Sculpture of a legendary French dragon.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

This French "sea of rocks" is packed with stunning rock formations and its own medieval castle.

This ancient theater was once the home of fierce gladiatorial battles.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."