Once the home of a hermetic monk, this cave now houses a small church.

The most visited, and possibly most controversial, museum in Germany.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Devilish masks, handicrafts, and pieces of old buildings create a snapshot of life in a historic Alpine region.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

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

Artfully arranged bones of 5,800 Austrians.

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

A museum and shop on Bourbon Street located in the French Quarter.

A snapshot of the city's fascinating voodoo culture.

This historic cemetery stopped accepting bodies before many Canadian cities were founded.

Vancouver's only resting place for the city's deceased.

The final resting place of the poets Shelley and Keats.

The remains of a paranoid inventor's hidden workshop lie in beautiful ruins amidst a Canadian park.

One of the largest cat sanctuaries in North America is considered a "Club Med" for felines.

A botanically themed auditorium blooms within the world’s last operating double-decker theater.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

Venice's island of the dead.

An Italian ghost town that fought obscurity, until a mysterious illness brought it to its knees.

The astonishing collection of an infamous criminologist.

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

A collection of objects supposedly singed by the hands of souls in purgatory.

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.