A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

The former private quarters and office of Dr. Sigmund Freud now hosts a museum housing the works of the founding father of psychoanalysis.

Built to give thanks for the passing of a plague epidemic, this cathedral is a one-of-a-kind architectural hybrid.

This former insane asylum now holds a pathological anatomy museum.

Macabre museum devoted to historical Viennese murders.

The final resting place for the remains of 143 Habsburg royalty.

The beautiful baroque library of the Hapsburg empire.

A church of bones, decorated with 40,000 human skeletons.

Two stunning 17th-century libraries and a cabinet of curiosities.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

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

Venice's island of the dead.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

A fake medieval village in the middle of Turin.

Renaissance villa and gardens complete with a tormented colossus.

An extraordinary collection of 18th century anatomical waxworks.

"The prettiest love letters in the world" ... or so said Lord Byron.

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

A 16th-century horror show built in a lovely Italian garden.

This one-time health resort was used by aristocrats around the world.

A formerly opulent Italian village is now a crumbling ghost town that no one really knows what to do with.

This ultra-modern burial building would have stacked the dead like a giant filing cabinet.