The chefs at El Diablo use heat generated by an active volcano to cook the food.

This local emblem is the oldest and largest dragon tree in the Canary Islands.

This unique rock formation is quite the local celebrity, although one day it may come crashing down.

A medieval church with largest and oldest collection of Renaissance frescoes in France.

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

The oldest Roman lighthouse still in use.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

Long tunnels run under the ancient chariot racing circuit to the tower.

Single runway interrupted by a busy road that cuts across its middle.

A well-restored ancient archaeology site gives a real feel for life during the Roman age.

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

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

Spain's unique Mosque-Cathedral has been a place of worship for both Muslims and Christians throughout its history.

Remarkably intact Roman stone fortifications have encircled this Spanish city for centuries.

This religious complex carved into a cliff is steeped in legends of miraculous stags and the Holy Grail.

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

The atmospheric ruins of a historic church can be found on a hill above the city of Oviedo.

Giant topiary dog once played a role in a terrorist bomb plot.