A museum dedicated to the Spanish occult in a town that was terrorized by the Inquisition.

Abandoned blockhouses from Nazi Germany's Atlantic Wall erode into the sea on a French beach.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.

Spanning the El Chorro gorge, this pathway used to be one of the most dangerous crossings in the world.

Rare karst landscape eroded from a flat seabed.

This stone complex marks the urban center of a lost civilization.

The large collection of pre-Columbian pottery might make you blush.

Lima’s Museum of Anthropology is lined with thousands of elongated human craniums.

The extensive relics of an ancient Roman and Phoenician fish processing plant hide in a town park.

Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

The highest peak in mainland Spain is said to be the final resting place of a Muslim king.

Despite its grandiose name, this enigmatic first-century void under the town is no cave, and it's possibly not a palace either.

This abandoned, turn-of-the-century astronomy hub is now the subject of more photographs than it ever took.

An impressive display of ships and artifacts from the ancient Mediterranean maritime trade.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

Bacteria and algae give the salty water its bubblegum hue.

Haunted tuberculosis hospital built by the patients.