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

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.

A place steeped in history that may be best known as the set of a 1960 film.

An elaborately decorated house sits on an otherwise quiet street.

This Roman arena once played host to bloody gladiatorial battles.

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

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

A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

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

This cemetery features modernist statues as strange as its name.

Designed by Gustave Eiffel before his famed tower.

Kissing the ass of this stone lioness has become a rite of passage in the city of Girona.

Immortalized by artists, this church incorporates a medieval lighthouse into its shoreside structure.

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

This castle-fortress is a living example of the transition from medieval defenses to modern fortifications.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

Science fiction's grandfather has a fittingly marvelous tomb.

This Late Gothic building that once housed Erasmus is now known as the filming location of "Suspiria."

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.