This mysterious ancient arch is hidden in the forest of Simbruini Mountains Regional Park.

This medieval settlement was abandoned after a series of landslides. What remained was largely destroyed during a mock battle for a WWII film reel.

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

This artistic temple brings together multiple architecture styles, but is only an example of one.

Knights Templar are visible inside this stunning Cistercian abbey.

An enormous sinkhole that local lore attributes to the anger of the Virgin Mary.

A former mining village that now operates as an open-air museum.

The crumbling remains of a 19th-century textile factory.

The ruins of a medieval village that was abandoned after a 19th-century inferno.

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.

High in the Italian Alps, a lonely chapel with a striking view of the Matterhorn.

A never-inhabited village that was built as part of Mussolini's agricultural reforms.

One of the four sanctuaries of Rieti's Holy Valley was the site of the first living nativity scene.

An abandoned building that once tightened a power line that stretched across Messina Strait.

This seventh-century fortification marked the western border of the Lombard duchy of Spoleto.

A fairy-tale-like forest that was sacred to Jupiter and Saint Anthony.

A perfectly preserved example of a fortified Medieval ricetto.

A monk spent 14 years carving steps through tuff to make this religious site more accessible to pilgrims.

Leonardo da Vinci was one of many to find inspiration in this unique, rocky landscape in Tuscany.

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

Europe's only Temple of Mithras located in a natural cave.

A cone-shaped top and cylindrical body set this 900-year-old structure apart from other Italian bell towers.

Before the more famous Royal Palace of Caserta, the king of Naples first commissioned this overlooked residence.

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