Spanish architects used seized Muslim gravestones to rebuild parts of the fortress.

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

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

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.

A reservation-only highland forest reserve of endangered Pinsapar firs stands above a village in Andalucía.

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

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.

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

The world's most elegant power lines.

An eerie collection of the surviving structures from a past celebration of the future.

The world's largest wooden structure.

The tallest tower in Cáceres's Old Town.

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

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

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

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

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

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

The oldest Roman lighthouse still in use.

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

These magnificently sculpted tombs represent Spain's own legendary version of "Romeo and Juliet."

This beautiful spit of land was once the summer playground of the king of Spain.

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