Hanging within this medieval church are the bones of a beast allegedly slain by a fourth-century saint.

The plague quarantine island home to the alleged "Vampire of Venice."

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Ever hear of the Milazzo Cage?

This curious, round temple is the oldest still-standing marble building in Rome.

The final resting place of the poets Shelley and Keats.

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

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

This museum houses an imposing skeleton army comprised of creatures great and small.

A haunting collection of the vanished and disappearing natural world.

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

A collection of human remains, animal body parts, and other macabre curiosities all legally for sale.

The largest land animal skull ever discovered.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

A treasure trove of artifacts, books, and artwork from the "golden age" of exploration.

A terrific purveyor of natural history objects and curios.

Only intact Ichthyosaur skeleton in the United States.

If you want to take a peek at Area 51, this is legally as close as you're going to get.

Eulogizing an unknown man's unusual demise.