The fountain marks the area where hundreds of accused witches were burned at the stake.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

This bronze statue was erected to honor a small Scottish town's beloved stray cat.

"May prick nor purse ne'er fail you."

Prove you deserve to be fed by Kenny Shopsin.

Abandoned railway line circling the city of Paris.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

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

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A cluttered and astounding collection of antiquities and curiosities.

A mysterious artist-run cabinet of curiosities and library.

Remnants of a Victorian garden feature sitting in public woodland.

A historic house left in "dramatic still life."

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A tongue-in-cheek arcade where the games are based on everyday life.

Hear the quietest sound from across the dome.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

A student driver's nightmare.

The remains of the great moral philosopher reside in a university in London.

The largest of London's subterranean rivers and once a mad, bad center of London life.

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

An unusual round church in London with a Templar past.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

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