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

A Spanish town built into the cliffs.

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

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

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

A 250-year-old timepiece-automaton adorned with golden mechanical birds, which still sing to this day.

The reconstruction of this prominent building fulfilled a long-written command.

A strange anthropomorphic stele with a mysterious inscription that has never been deciphered.

The largest medieval water tank on the Iberian Peninsula is preserved beneath the Cáceres Museum.

Fragments of human bones are embedded in the walls of this quaint alley.

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

This Roman arena once played host to bloody gladiatorial battles.

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

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

A statue of a boy looks up at where the famous rival to the Leaning Tower of Pisa once stood.

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

A spectacular walk on the flank of a gorge.

A historic Christian shrine nestled within a spectacular natural cave.

An unusual but excellent display created in the 1930s as propaganda against the Freemasons.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

The Cathedral of Salamanca has a number of unusual carvings but none so surprising as a modern astronaut.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

Elaborate tile work in this railway station tells the story of Portugal.