One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.

Twelve natural mummies are displayed in the crypt of this former monastery school.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

These lush botanical gardens employ the most purrfect pest control force.

What looks like a simple quaint estate in rural Pennsylvania was in the 18th century home to a small monastic community.

A collection of artifacts from Maryland's maritime past.

A sculptor's dream castle turned fantastical ruin.

This woodland architectural installation acts as a camera obscura for the heavens.

Art Deco urban decay at this historical building.

A retired tobacco farmer's pet project turned into a sturdy miniature city.

This ancient village and its adjoining cemetery have a beautiful history of death and remembrance.

This massive library holds what was once the largest book collection in the world.

The oldest stone house in Paris was built by its most famous alchemist.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

France's most famous cemetery, with some of its most curious tombs.

Everything from a plane to your own two feet are needed to reach this jungle resort.

The Indian capital of black magic and witchcraft.

This picturesque island graveyard is the final resting place of dozens of notorious pirates.

This Tibetan monastery has survived multiple attacks and is also a sky burial site.

Where America's first doomsday cult awaited the end of the world.