Artist Diego Morlin's war between the natural and human worlds is a wanderer's delight.

The engineering wonder and pleasure dome of a much-maligned emperor still holds undiscovered secrets.

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

An abandoned 17th-century baroque hunting lodge with a wonderfully strange architectural plan.

This picturesque Umbrian city has a subterranean side that has long remained hidden.

One of the most important yet well-hidden museums dedicated to the history of medicine.

A fascist-era rural village abandoned since the early 1980s.

A fascinating assortment of cave dwellings, medieval ruins, and sarcophagi are being devoured by the forest.

A magnificent Neogothic tomb hides within this Italian fairytale-like forest.

The largest and most famous wax anatomical collection anywhere in the world.

This Neapolitan exhibition hall grants weird and wonderful insight into the intricacies of human biology.

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

Architectural monsters are devouring this palace's every door and window.

The graveyard is filled with beautiful funerary art and boasts breathtaking views of Florence.

A tree that defies gravity grows in an ancient ruin.

A huge enchanting public park just outside the ancient walls of Rome.

This domed temple was built in a hidden cave mouth as a refuge for sinners seeking absolution.

Buried next to Pompeii, this lesser-known Roman villa was the opulent vacation home of Emperor Nero's wife.

A beautifully well-preserved ancient Roman villa.

The Neapolitan Cult of the Dead still cares for the skulls at this mini-Fontanelle.

Eco-village hidden in the foothills of the Alps that created a massive system of psychedelic underground temples.

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

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

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.