The sixth of London's "Magnificent Seven" cemeteries, and a source of unlikely inspiration to Beatrix Potter.

One of the world's largest collections of pathological specimens.

One part local history, 99 parts gruesome haunted house.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

Banksy gives themself artistic license with this piece of London street art.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

Tucked away in a small German apartment is an eclectic museum devoted to West African vodun culture.

The natural mummy of the less than chivalrous Knight Kahlbutz.

The world's biggest pet store.

This unique exhibit "Dialogue in the Dark" reverses roles as the visionless become guides and the sighted become ‘blind.’

Horrifically creative torture devices and shame punishments line the walls of this chilling museum.

Executed in 1401, Exhumed in 1878, Stolen in 2010.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

In 1830, cemetery workers in Cham unearthed a chamber housing thousands of skeletal remains from the 13th century, which can still be viewed today.

This German bone house contains the remains of some 20,000 souls.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

This unique Renaissance castle was turned into a home for Nazi occultism.

Blitzkrieg bop your way through Berlin's Ramones Museum.

Terrifying derelict military hospital once housed a recuperating Hitler.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A striking 12th-century-style castle built on the edge of a cliff.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

The fairy tale castle of the "fairy-tale king."