With its mine closed, this old village is starting to resemble a ghost town.

Natural cathedral designed by Italian artist Giuliano Mauri.

Bizarrely-painted church designed by a controversial artist.

An Austrian house of bones filled with hundreds of intricately painted skulls.

An abandoned Roman salami factory has found new life as an art space home to 200 squatters.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

A rambling museum which honors the beauty in everyday objects.

This museum is rotten with a century of wax medical deformities.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

The location of the last witch trials of Italy, known as "The Salem of Europe."

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

Five candy-colored villages on the Italian Riviera.

Venice's island of the dead.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

Renaissance villa and gardens complete with a tormented colossus.

Venice's "Island of the Mad."

This former insane asylum now holds a pathological anatomy museum.

One of the best collections of wax anatomical models in the world.

Beautiful Austrian natural history museum with carved ceilings and row after row of ancient taxidermy.

The beautiful baroque library of the Hapsburg empire.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

Swarovski's museum/theme park is a fake diamond fantasia overlooked by a giant.

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