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

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

This line of 12 tower mills described in the story of Don Quixote is among the most iconic landscapes in Spain.

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

An early 20th-century bullring converted into a modern shopping center.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

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

The final resting place of the great navigator, or maybe his brother.

This house's itty bitty size means no humans allowed.

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

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona’s iconic (but controversial) church was finally completed in 2026—a century after the death of its architect.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Inside this Krakow church, an explosion of psychedelic color.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

This kitsch eatery is chock-a-block with bric-a-brac.

The largest retailer of seashells in the world.