A hospital where antique dolls are given new life.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

The oldest public library in Ireland.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

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

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

Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

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

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

A kaleidoscopic warehouse-maze of handmade neon signs.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

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

This automated sculpture of two men peeing will spell out text messages with their micturition.

A collection of anatomical samples from one of the first anthropologists to suggest that humans reached North America by crossing the Bering Strait.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

This classic restaurant features a gorgeous mirror-clad room.

A tiny, intricate model railway system.

The sunken structure looks like the victim of a catastrophic flood.

This French castle is said to have once held the Holy Grail but is now a gorgeous mountaintop ruin.

Where the high court feasted, frolicked, and high courtesans put their royal lovers' diamonds to the test.

One of the greatest maze designer’s greatest mazes.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.