Geometry and mystery come together in an epic show of octagonal masonry.

The sunlight passing through the opening of this huge cave system creates a magical effect.

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

One man's quest to fix his toilet unearthed over 5,000 artifacts spanning more than 2,000 years of history.

Ride a boat through this magnificent underground world, which now doubles as a theater.

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

Constructed during the 1960s, this bridge is still the highest in Italy.

The oldest scientifically dated tree in Europe lives on a remote cliff.

The abandoned ruins of a failed resort hide on this verdant, picture-perfect island.

An Italian hillside ghost town.

This 50-foot-deep sinkhole created in the 14th century is home to rare plants and fungi.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

Behind medieval walls in a corner of bustling Palermo is a breathtaking former mosque once inhabited by a wolf-taming hermit.

Every inch of this chapel is covered in craftsmanship from across the world.

Gorgeous views of Italian mountains and valleys form the backdrop of this unique open-air theater.

A small Byzantine church lost in the middle of the mountains of southern Italy.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

Armenian monks at an island monastery in the Venetian Lagoon make a rare rose petal jam.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

Once the hunting reserve of a noble family, this is one of the few remnants of Pleistocene planitial forest in northern Italy that still stands.

The origins of a large, medieval castle are shrouded in mystery, but now it's a delightful garden.

In this nearly 1,000-year-old monastery, monks painstakingly restore old books.

A complex, nine-layer maze on the grounds of a Venetian doge's playground.