While most shipwrecks are submerged, this ship in Cyprus ran ashore.

Dig for your own trilobites in this goldmine of invertebrates.

A house carved into a rock in the 1940s.

This prehistoric karst cave is situated near a working ranch and historic warm springs.

A chemical factory damaged by two earthquakes and an explosion that became abandoned after bankruptcy.

This once-derelict building is now one of the most beautiful bookstores in the world.

Inaugurated three times, this tower offers some of the best views of Madrid.

The defensive tower was built centuries ago to warn locals of Berber pirate attacks.

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

Tour the inside of a massive lava tube formed during a 1949 volcanic eruption.

This enchanting green space houses a labyrinth lined with toxic plants.

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

Abandoned tunnels dug for the once-thriving sea salt industry on the coast of southern Spain.

Semi-mystical manmade towers of rocks decorate this rocky seaside.

This beautiful spit of land was once the summer playground of the king of Spain.

This panoramic lift provides a futuristic ride up San Pedro Mountain.

An arresting arch punched straight through a mountain provides one of the most scenic spots, and challenging climbs, on the planet.

Stormy conditions send jets of seawater bursting through holes in the cliffs.

A celebration of solstice followed by a fiery purging of evils.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

Seaside ruins of a settlement that date back to the first century B.C.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

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

A historic Christian shrine nestled within a spectacular natural cave.