A futuristic, brutalist masterpiece that is also strangely prison-like.

This massive monument was unveiled the day Kosovo declared independence from Serbia.

The ceiling of this cavern is dripping with multicolored marble stalactites.

Two distorted Romanesque columns hold aloft a mine cart in honor of laborers who died during WWII.

This colorful statue welcomes visitors to a Barcelona park.

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

Vibrant street art created with mixed media.

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

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

Madrid's last horchata kiosk is a blue-and-white beacon of refreshment.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

This massive fiberglass Gulliver turns every visitor into a Lilliputian.

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

The world's largest wooden structure.

A whimsical brother of the nearby Fallen Angel statue takes the falling part quite literally.

A lush indoor jungle fills this bustling Madrid transportation hub.

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

This giant sculpture made of trash is a critique of society's wastefulness.

A statue of a boy looks up at where the famous rival to the Leaning Tower of Pisa once stood.

For more than half a millennia, this automaton has rung an hourly bell.

The most elaborate of 12 medieval arched doorways to the old city of Burgos.

For over 300 years this little carving has been the city’s good luck charm.

These fly sculptures are scattered around the city and represent the patron saint of Girona.

Elaborate tile work in this railway station tells the story of Portugal.