An archaeological treasure trove towers over the valley of Chiavenna.

A beautiful discovery site of prehistoric burials.

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

The steel cable lets adventurers zoom between two mountain towns at speeds of up to 75 miles per hour.

A dilapidated psychiatric facility on the outskirts of Milan where electroconvulsive therapy was developed and Napoleon once lived.

A unique form of erosion created an uncanny landscape of boulders perched atop slender columns of clay.

The highest waterfall in Italy is only "turned on" five times a year.

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

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

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

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

These delicate sand pyramids look like naturally occurring gothic spires.

Machismo turned on its head: the lady's hand goes to the dude with the bigger brain.

Crossing this suspension bridge feels like walking through the sky, a fitting tribute to the head of the Apollo program.

Italian cave with exceptional acoustics and an unsavory history.

This abandoned Brutalist treehouse is a hidden architectural relic.

Romans built the world's tallest artificial waterfall in 271 BC.

One of the largest caves in the world open to the public.

Dramatic sea stacks adorn the coast of this small village on the Adriatic coast.

This real life asylum of horrors is now an abandoned ruin that hides the unbreakable code to one patient's insanity.

This enchanting 600-year-old tree is so magical it inspired the beloved tale of Pinocchio.

The glowing blue Nymphaeum of Emperor Tiberius.

According to the local folklore, the myriad colors of this lake are the result of a lovelorn wizard's blunder.

Renaissance villa and gardens complete with a tormented colossus.