Part of the medieval watchtower is displayed in an otherwise ordinary parking garage.

This lucky bronze frog was gifted to Madrid by a casino.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

Just like in Hollywood, Madrid has also a forgotten walk of fame.

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

This abandoned viewing platform has become a monument to unnecessary government spending.

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

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

Replicas of fossils unearthed during renovation work reveal how this area would have looked millions of years ago.

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

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

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

The fragmented remains of a massive public bath connected to the city's water supply.

Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

A small museum displays some of the artifacts discovered during a subway station renovation.

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

A beautiful little museum hidden away in the heart of Barcelona holds a treasure trove of Ancient Egyptian artifacts

Sometimes called the Banksy of Madrid, Muelle was a pioneer of street art in the Spanish city.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

This fountain was designed to honor the man who helped bring water to Barcelona.

This historic fountain is a favorite neighborhood meeting point.

Order cookies baked by cloistered nuns in a 400-year-old monastery.

A window into a long-lost world, these colorful tiles advertise a long-defunct range of purgative teas, harmless smokables, and diarrhea cures.

At least according to the Guinness World Records.