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

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

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

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

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

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

Legend says this sacred tree was a gift from goddess Athena.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

The remains of this 2nd-century Roman temple are incorporated into a modern building.

This statue is the only female representation of Rome's "talking statues."

A massive marble foot is tucked away in a small alley near the Pantheon.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

Architectural monsters are devouring this palace's every door and window.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This hidden Art Nouveau courtyard is an opulent feast for the eyes.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

So many migrating birds roost on the bridge, it has a special summer speed limit.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

Rumor has it the uncarved lump behind the three famous suffragists is reserved for the first woman president.