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

The gigantic skull of a long-extinct species that once roamed the forests of England and Ireland.

The Tudor-style cottage in the middle of the square is not quite what it seems.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

Black cat statues guard this temple-like Egyptian revival factory.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

A community of artists and entrepreneurs seeks a simpler life on London's waterways.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

This London plaque marks the spot where David Bowie's famous alien made his debut.

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

Scattered throughout London are ancient remnants of the city's former bounding wall.

Catacombs turned marketplace.

The beautiful baroque library of the Hapsburg empire.

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

The site of Austria's biggest concentration camp now honors its victims.

The medieval "dragon" on an Austrian city's coat-of-arms comes to life in a fountain.

A patriotic medieval knight in driven-nail armor raised money for widows and orphans of WWI.

Terrifically morbid cemetary and site of famous Paracelsus' grave.

The resting place for anonymous victims of the Danube's dark waters.

The floor of this spectacular Baroque sanctuary is covered in memento mori.

This subterranean necropolis holds three floors of antler-dug grave caves.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

People have been living in the cave houses on this Italian hillside since the Neolithic era.

This centuries-old Italian chapel hangs midway down a sheer cliffside.