The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

Eighty million natural history specimens call this gargantuan museum home.

Hear the quietest sound from across the dome.

An unusual round church in London with a Templar past.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Museum dedicated to the terror regimes of Hungary.

Steadily reminding Czechia of its past.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Macabre astrological automaton clock dating to the late 1400s.

This fairytale inspired, warped building houses restaurants, shops, and a radio station.

The walls and ceiling of this Polish church are decorated with thousands of skulls, with another 21,000 skeletons just below.

Polish luminaries and masterful folk art find sanctuary in this unique cemetery.

Naturally formed rock city in Poland.

A fairytale Gothic castle steeped in Nazi treasure conspiracy theories.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

The famous winding walk at Chartres is surrounded in mystery and myth.

Former hunting lodge of a duke who was an avid collector of impressionist works.

France's most famous cemetery, with some of its most curious tombs.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.