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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

The cedar tree in Highgate Cemetery earned its title by accident.

This landmark church concealed a crypt packed with bones that was discovered thanks to the London Blitz.

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

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

Rebuilt remains of a temple to Roman god Mithras.

An underground city of salt.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

This grubby wall is said to be one of the Earth's esoteric energy centers.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This man-made mound monument was built out of soil from all across the Polish empire.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

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

This derelict superstructure was a very important warning system for the Soviet military.

This attraction was abandoned after the Chernobyl disaster.

One of the most poignant ruins of the Chernobyl nuclear disaster, the local football team's stadium has been quickly reclaimed by nature.

The ghost town left by the worst nuclear disaster of all time is being taken over by nature and urban explorers.