This mysterious sculpture was thought to symbolize a world ravaged by misery.

Series of underground houses inhabited continuously for centuries.

Now a memorial, this factory was once used as a concentration camp for artists by the Vichy government.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

Claude Monet immortalized this medieval bridge in two of his paintings.

Hundreds of huge, centuries-old horseshoes adorn the walls of this nontraditional 12th-century castle.

There once was a man named Lear / Who found limericks so dear / His final resting space / Is an unusual place / Most people don’t know he’s here.

An ancient rogue artist community hidden next to one of the world's most glitzy and glamorous cities.

Fortified medieval tower house with lovely roof garden.

Inside this park resides a giant clock tower and ancient sundial that overlook the town below.

A stunning medieval castle houses this eclectic, interactive tribute to all things wine.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

Perched above a grotto, this tribute to Mother Nature looks out into the ocean.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

This Tuscan church contains a gallery of over 700 ex-votos depicting near-death experiences.

This deceiving white sand beach gets its brilliant hue from the chemical discharge of a nearby factory.

Abandoned cemetery of the former Psychiatric Hospital of Volterra.

Stumbling upon this whimsical wooded garden is like stepping into an enchanted forest full of philosophical musings.

Water and windows define this defensive Italian well.

A lonesome Moai stands in a small Italian town some 9,000 miles away from its Easter Island brethren.

This immaculate and historic water garden culminates in a massive stone dining table with an inset fountain for chilling the wine of the Cardinal's guests.

The ruins of this medieval tower are destined to crumble into the sea.

This abandoned Brutalist treehouse is a hidden architectural relic.

Roman-era ships unearthed...