2300-year-old Roman road connecting the empire.

One of the most important yet well-hidden museums dedicated to the history of medicine.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

Architectureal fantasy quarter of Rome.

A forgotten "city of water" underneath the famous Trevi district.

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

A line of abandoned, alien-like fortresses dot the mountains of North Italy.

A climbing route in the mountains of Italy’s Dolomites, built for soldiers during World War I.

Five candy-colored villages on the Italian Riviera.

Genoa's collection of over 4 million zoological, botanical, and geological specimens from around the world.

This former fascist summer camp was abandoned for decades.

An abandoned quarry hides an open-air gallery of huge sculptures, some made from the rubble of 9/11.

Skulls and skeletons are omnipresent in this church dedicated to souls trapped in purgatory.

The only house in Oregon designed by the famous architect, Frank Lloyd Wright.

The world's first underwater farm is home to more than 700 plants.

The bright red cars take travelers through breathtaking Tuscan scenery.

One of the highest mountain passes in Europe has been ranked among the best driving roads in the world.

On the coast of Sardinia, a once-great mining village is finding new life as a coastal resort town.

The world's largest bamboo labyrinth is a living demonstration of the plant’s immense potential.

This natural gas vent certainly earns its name as the smallest volcano in Italy.

Artist Diego Morlin's war between the natural and human worlds is a wanderer's delight.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

This seaside Italian village doesn't just look Escher-esque, it actually inspired the mind-bending artist.

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.