The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The stately remains of Llywelyn the Great's mighty fortress.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

Replicas of fossils unearthed during renovation work reveal how this area would have looked millions of years ago.

A curious memento mori hangs in the magnificent Cathedral of Segovia.

A delightful museum devoted to the history of books.

This fascinating and poignant museum chronicles every imaginable aspect of Spanish colonialism in the Americas.

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

This medieval fortification has weathered the centuries better than any other structure from its era.

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

Living towers made of people that are now recognized by UNESCO.

This enormous censer uses a pulley system installed over 400 years ago.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

The little church's beautifully frescoed ceiling has earned it the nickname “the Sistine Chapel of Madrid.”

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

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

An exact replica of a colossal Olmec head sits atop a pyramid within a Madrid traffic circle.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

Thanks to an acoustic anomaly, this unassuming stone bench has heard one hundred years of secrets.