The oldest restaurant in the world is this old-world Spanish eatery, still known for its suckling pig.

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

The earliest known map to show America, discovered by accident at a Paris bookshop.

A statue commemorating a beloved stray dog who was adopted by the entire neighborhood where he lived.

The Spanish king's private bathroom embraced the idea of a porcelain throne.

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

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

A lush indoor jungle fills this bustling Madrid transportation hub.

A pair of gigantic baby heads greet passengers at Atocha Station.

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

A small town lost in the mountains of southern Italy hosts the childhood home of one of the most famous saints of the 20th century.

During World War II, the Shroud of Turin was secreted to this remote southern Italian complex.

According to the legend, this structure was built in a single night with the help of the devil.

A submerged archeological park still holds the wonders of a Roman Sodom.

Italy's third-largest Roman arena gives a peek into the underground operations beneath the ancient spectacles.

This magical-looking island is notorious for the misfortunes suffered by its owners.

This medieval city gate is now a blend of the past and the modern world.

The once forbidden "secret cabinet" of erotic art from excavations of Pompeii and Herculaneum.

San Gennaro, the patron saint of Naples, greets pedestrians between these narrow city streets.

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

A labyrinth of ancient tunnels hidden below the city holds the ruins of 2,500 years of history.

The remains of the left arm of the levitating philosopher-saint are kept in a 13th-century Neapolitan basilica.

A popular legend claims that the famous pizza was invented at a restaurant in this alley.

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