A visionary Italian architect created an impressive cluster of concrete structures for a family's private tomb.

This cliff-face port is considered a masterpiece of mining engineering.

This poignant art installation raises awareness of violence against women.

An unusual house built using an iso-elastic membrane.

This overgrown mountain village has been abandoned for nearly a century.

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

A quiet Sicilian village is home to a cafe that had an important role in "The Godfather."

Contains some of the world's more disturbing wax anatomical models.

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

A semi-abandoned village destroyed by U.S. bombings during World War II dominates the valley of Turano.

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

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

Fountain where visitors can earn a license to be mad.

During World War II, this rice mill became a Nazi concentration camp.

This medieval hilltop village was abandoned at the end of the 19th century, after existing for more than 500 years.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

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

Amalfi's pre-industrial history is slowly being engulfed by the lush vegetation of the Ferriere Valley.

Haunting graffiti left by prisoners of the Spanish Inquisition.

The city of Palestrina was built around this magnificent terraced sanctuary dedicated to the pagan goddess Fortuna.

A collection of grotesques lines the walls of this Italian villa.

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

A dreamlike medieval church dug into the tuff rock, with unusual carvings and possible traces of the Templar knights.

Explore the quarry where the marble was sourced for Michaelangelo's David.