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

An Italian geologic wonder that served as the inspiration for the landscape of Dante's hell.

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

The ruins of an abbey believed to have been founded by Charlemagne in the 9th century.

An open-air museum in a mountain valley features works designed to blend in with—and disintegrate back into—their natural surroundings.

Crumbling ruins of the thermal baths that once attracted royals and aristocrats from throughout Europe.

A stunning bridge that appears as if it's lunging to the shore, and has a legend of a devilish architect.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

These gutted monastery ruins still stand proudly in the middle of the Italian countryside.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

A massive natural rock arch gives the Tuscan mountain its own window to the sky.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

Nestled in the hills of Tuscany are gorgeous, multicolored hot springs.

These delicate sand pyramids look like naturally occurring gothic spires.

This Italian dam is covered in salt-hungry goats who manage to scale its almost vertical face.

This half-finished "city of toys" was almost Italy's own Las Vegas.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

Walk through a fairytale in Tuscany.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

This Italian foot path winds through the mountains via 52 individual tunnels.

Romans built the world's tallest artificial waterfall in 271 BC.

Where Aleister Crowley taught magick in "La Chambre Des Cauchemars," his "Chamber of Nightmares."

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.