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

Built in 1925, this glass-roofed shopping arcade is known for its modernist Italian architecture.

Cliffside houses provide a spectacular view from their perch above the valley.

One of the most important Celtic-Roman archaeological sites in Spain.

This 7,000-year-old megalithic wonder covered by a Franco-era reservoir emerges in times of drought.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

At least according to the Guinness World Records.

12th-century holy complex shares land with a natural park full of heavenly waterfalls and raptors.

Many miles south of Loch Ness, a similarly-named sea monster stands at the center of a roundabout.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

This influential Renaissance-era library was once the haunt of kings and monks.

A magnificent, long-abandoned castle built in the wake of the reconquest of Spain.

This species of wild goat stars in witchy legends and frolics among the park's eerie rock formations.

Hundreds of preserved dinosaur footprints can be found along a hiking trail in this small village.

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

The much-loved protagonist of famed Argentinian comics can be found sitting on a park bench.

A statue honoring the tragic heroine of a Spanish literary masterpiece.

This modern sculpture looks out over the sea and amplifies sound from the inside.

A medieval village holds a very modern hotel.

This remarkable museum sprung from one of the most important prehistoric archaeological sites in the world.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

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

An out-of-place grove of sequoias thrives in northern Spain.