English antique dealers with a taste for the unusual.

London's old-school healing garden.

The television series' iconic giant foot was borrowed from this classical painting.

A kaleidoscopic warehouse-maze of handmade neon signs.

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

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Gambling, boozing, and yodeling animals cover the walls of this dive bar cum natural history museum.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

Cat art as far as the eye can see.

The world's only museum devoted to the wonders of fluorescence.

The history and future of cannabis.

Sweden's first nuclear reactor, R1, can be visited 25 meters underground.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Silent memorial, using bone conduction to take people back to the Dresden Bombing of 1945.

Home to three historic ships from the age of Vikings.

Striking occult iconography on a medieval German church.

An eerie, derelict amusement park in Berlin.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

A slice of central Asia in the middle of Berlin.

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

A perfectly circular stronghold constructed in the 10th century is now a nucleus of Viking culture housing a museum, village, and reenactment of an epic Viking battle.

Old Danish castle immortalized in Shakespeare's Hamlet.