The anatomical-pathological collection of a man who changed surgery.

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

These fantastically named natural pools look like something out of a Scottish myth.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

One of the oldest medical collections in Europe focusing on rare surgical instruments.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Notorious artist squat renovated into legal studios.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

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

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

World's first "penitentiary," meant to be humane, drove men insane.

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

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The mysterious, fantastical woodland inspiration for "The Lord of the Rings."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A historic London pub with prison cells in the cellar and a "spy room" on the second floor.