The blowhole bursts spectacularly right next to the buildings in a medieval seaside town.

The last of three massive blast furnaces that were once at the foundation of the Port of Sagunto economy.

If you like Art Deco you will love this bridge.

This exhibition space designed to look like the skeleton of a whale is hidden underground.

This air raid shelter from the Spanish Civil War is now a museum dedicated to the history of the city's bombardment.

A dictator's failed public works project has been reborn as two linked trails through spectacular scenery.

This elaborately decorated wall is an homage to the history, beauty and lore of the palm tree.

Possibly the oldest masonry dam in all of Europe.

Originally planted by the ancient Carthaginians, this sprawling palm grove is one of the largest in the world.

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

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

Haunted tuberculosis hospital built by the patients.

Peek into a cave of giant, glimmering crystals.

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

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

This surreal-looking tree pruned more than 1,000 years ago is still producing olives for oil.

Bold black and white motifs of life and death add a dramatic flair to this 17th-century crypt.

This abandoned mansion has a window for every day of the year, and is a temple for ghost hunters.

This art installation at an abandoned lipstick factory has distinct anti-capitalist vibes.

A New York–based physician returned home to Spain to build his own elaborate monument to Christopher Columbus.

Exploring the wilder, more passionate sibling of Erg Chebbi feels like discovering a secret sun-kissed planet from another galaxy.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

A complimentary beverage is offered to the bodega's resident rodents every day.

The cathedral of a controversial, conservative, schismatic sect that declared the Catholic Church heretical and founded its own succession of popes.