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

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

A gravity-defying "devil's bridge" that has a surprising architectural feature for its stability.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

Europe's official "zero-level," the equator of elevation.

These medicine cabinet staples are part of the museum's collection of everyday objects.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

On a side street near the interstate is the building where the famous anarchist once owned an ice cream parlor.

Enjoy egg rolls and live music in a converted bank vault.

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

Artist's eccentric property excessively decorated with found objects and work of his own.

The construction of a tram line unveiled hidden remnants of the old medieval city.

This 15th-century church houses priceless works of art from a range of Croatian artists.

This picturesque archeological site looks like it was pulled straight from a fantasy novel.

Read a book with a glass of wine at this classically restored bar.

A once-secret library of Freemason history in Catalonia.

This generously endowed statue once stood guard outside a Roman home.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

Possibly the oldest church in Barcelona, this basilica has its pagan and Christian mythologies all mixed up.

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

18th century anatomical amphitheater of the Royal College of Surgery of Barcelona.

This garden houses the remains of the ancient Greek port of Marseille.

This folk museum is devoted to small figurines of provincial village life.