The underground sanctuary of a mysterious ancient cult.

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

The Pope’s secret escape route.

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

Bell tower juts out from a village buried under a lake.

Fountain where visitors can earn a license to be mad.

The giant skeleton sculpture is surprisingly well-traveled.

Geothermal waterfalls in Tuscany.

Largest necropolis in the Mediterranean.

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

Stalactites and stalagmites in a beautifully lit cave.

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

A collection of collections, including an anatomy museum, the “Cabinet of Physics of Alessandro Volta, a museum of natural history, mineral collection, and much much more...

Two very green residential towers cleaning the air in one of Europe's most polluted cities.

This medieval Italian town is a sheer (and beautiful) cliffside defense.

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

Rome's ancient Etruscan rival, now a park full of ruins.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

A tree that defies gravity grows in an ancient ruin.

A memorial to Brazil's little-known role in World War II.

The mystic whose incorrupt corpse still attracts the faithful.

A rare example of an octagonal Catholic church.

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

This medieval Italian village was transformed into an architectural marvel by the famous "Papessa" Donna Olimpia.