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

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

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

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

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

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

This house's itty bitty size means no humans allowed.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Famously misunderstood wonder of the ancient world

Elevated freight railway turned wildly successful urban park.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

The walls and streets of the ancient city are peppered with penises.

This amazingly well-preserved villa just outside Pompeii boasts rare examples of ancient Roman paintings.

Erotic art covers the walls of the largest ancient pleasure palace.

Ancient snack bar of the Roman Empire re-opened.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Two stone columns flank the grand Venice square, but there were supposed to be three.

Those who own or stay at this 500-year-old, allegedly cursed house often meet terrible fates.