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

An abandoned tower once used to study the cosmos hides within a thicket of greenery.

Dozens of large-scale, creative, evocative curios from prominent artists dot the calm outdoor space around this major museum.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

A lonely beacon, precariously perched atop a remote sliver of rock.

These quaint French houses dangle precariously over a precipice.

Sleep in a glass pod dangling off a cliff.

When occupying Nazi troops detonated a mine below, medieval frescoes were revealed in this small cliff-side hermitage.

Sleep amongst an abundance of art from the modern era.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

This winding road through an Italian canyon may be the most scenic drive in the world.

The world’s highest ski resort was deserted after an 18,000-year-old glacier melted away.

Take afternoon tea in a 17th-century almshouse.

A hyper-remote desert cave dramatized in "The English Patient."

Located on Guam's south shore, this small cave is named for an ancient and powerful Chamorro Chief.

A series of abstract sculptures pop up from an otherworldly volcanic landscape.

Follow the path behind this treat-slinging camper van to a sculpture garden in the forest.

A cave in southern Italy adorned with thousand-year-old Biblical frescoes existed in obscurity until fairly recently.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

This abandoned boat was left in place thanks to its rotting beauty.

One man's love of natural beauty led to the creation of this hidden granite monument.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

A castle perched precariously over the Crimean Sea.

An otherworldly restaurant perched on the edge of a jagged cliff next to a medieval holy city.