A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

The world's only museum devoted to the wonders of fluorescence.

These distorting, funhouse mirrors achieved fame in a renowned piece of Spanish theater.

This cave was the former seat of power for two brothers who ruled together as kings.

Dedicated to a young woman who broke gender barriers at the University of Madrid.

With a facade that measures just 107 centimeters, this five-story building is one of the skinniest in Europe.

The current seat of the Parliament of Andalusia was once the epicenter of the Great Plague of Seville.

Guitarist Paco de Lucía overlooks travelers as they pass through this train station dedicated to his legacy.

A pair of gigantic baby heads greet passengers at Atocha Station.

This unassuming bookstore in the heart of Madrid is one of the oldest in Spain.

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

This amended headstone marks the grave of a participant in one of the most successful military deceptions of all time.

The largest prehistoric cemetery on the Balearic Islands dates back over 2,500 years.

An automaton perched above an classic clock and watch store

Vibrant street art created with mixed media.

The remains of the second-oldest zoo in Europe can be seen within these library gardens.

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

A site where “the ravages of the war are more striking…than any other place in contemporary Spain.”

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

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

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

In the fictional world of Kcymaerxthaere, celestial wonders marked a portal to a powerful route of travel at this site in Madrid, Spain.

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.