This tiny islet has somehow housed an ancient temple, two monasteries, a church, a fortress, and a restaurant.

This monumental fountain has moved around the city multiple times.

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

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

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

This amazingly preserved Doric temple was abandoned before it was ever completed.

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

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

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

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

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

A medieval fountain lined with 99 unique stone faces whose origins and meaning remain unknown.

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

A brutalist gem towering over the heart of Milan.

This military mausoleum captures the solemn grandeur that most memorials only aspire to.

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

This breathtaking monastery was established by Saint Benedict himself 1,500 years ago.

A volcanic old faithful, Stromboli has been erupting continuously for the last 2000 years.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

A madman's personal garden filled with 1,000 sculpted heads.

This ancient altar emerges from the thick forests to reveal the mysteries of Etruscan sacrificial rituals.

Beautiful views and Roman-style statues on the Italian coast.

The world's oldest surviving anatomical theater, where "the dead are pleased to help the living."