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

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

This enigmatic Iberian sculpture of uncertain origin may have once guarded a burial site.

A haven for book enthusiasts across the street from Retiro Park.

Known as the Casa de las Siete Chimeneas, this haunted 16th-century manor has a dark, mysterious past.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

Commonly acknowledged as the only public monument to the Devil himself.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

A celebration of solstice followed by a fiery purging of evils.

Kissing the ass of this stone lioness has become a rite of passage in the city of Girona.

Designed by Gustave Eiffel before his famed tower.

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

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

Two towns are linked by an engineering marvel masquerading as a boring suspension bridge.

Marvel at this immense work of art that greets arrivals to the city.

This pre-Hispanic apartment complex also includes ancestral paintings that point to its military past.

Hidden inside a hotel is a museum of miniature models depicting the traditions and history of Mexico.

A grand entrance to one of the world's smallest Chinatowns.

The unique collection of gifts includes braids of human hair, a spoon, and a Virgin made of bread.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

This sculpture garden is a serene oasis wedged in the middle of a busy highway.