An incarceration museum on the spot of possibly the oldest prison in England.

In this cobwebbed old operating theater, you can practically hear the screams of the unanesthetized patients.

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

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

A little slice of Japan and its aesthetics in London's Holland Park.

A hands-off space for graffiti artists to hone and display their skills.

The curios of pharmacist and collector Henry Wellcome.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

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

One part local history, 99 parts gruesome haunted house.

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

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This churchyard arbor is surrounded by hundreds of gravestones placed there by author Thomas Hardy.

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

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

If the tunes of antique organs and musical marionettes don't intoxicate you, the draft beer certainly will.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

Just a few miles from Novalja, a strange geological oddity has left scientists baffled.

This abandoned Croatian stronghold never saw a great deal of conflict but it is still a beloved relic nonetheless.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."

This truly palatial work of Communist-era architecture now sits crumbling on a Croatian beach.