A small alleyway with an unusual moniker.

A signal indicates the entrance to this alley, rumored to be a meeting place for witches.

A mysterious emblem tucked in an small alleyway is actually the coat of arms of a heroic medieval family.

You won't find these curiously named passageways anywhere else in England.

This Funeral Hearse Museum represents the finest in cadaver transportation.

Barcelona's historic 19th-century sewers, whose foundations were laid in medieval times, are open to the public for exploring.

Gothic tower where Lord Alfred Tennyson wrote the poem "The Sleeping Beauty."

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

King of the Saxons on top, Roman goddess of wisdom on the bottom.

Murals of the wild parties once held on the frozen River Thames.

This pub boasts a curious history and may have inspired a Dickens character.

This unassuming alcove in London’s famous Tower Bridge once served to capture, store, and display dead bodies from the River Thames.

A petite castle folly in the English countryside.

These marks in Myddelton Passage aren't your run-of-the-mill vandalism, and they weren't made by your typical vandal.

This informal museum is a magical trove of anonymous art collected from car boots and flea markets.

This wooden chair dates possibly back to the 15th century, and commemorates a local legend.

Beneath Kraków Old Town's main square lies a hologram-filled medieval market vampire graveyard wonderland.

Mysterious chains and iron stakes adorn this strange grave, with no explanation.

This eclectic antique shop is home to the taxidermy remains of a celebrity lion named Simba.

A rare wooden coffin set vertically into the Gothic arch of an ruined church.

A former fisherman's hut deemed too small for habitation is now a delightful tourist draw.

The longest and tallest aqueduct in Britain can actually be sailed across.