A monument to the three wars that led to German unification towers within a Berlin traffic circle.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

One of the oldest cemeteries in Germany was originally used for victims of a cholera epidemic.

Residents of Berlin take their coffee and cake in one of the city’s most restful spaces: a cemetery.

Home to 10,000 medical specimens including the remains of Rudolf Virchow's extensive collection of pathological specimens.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

This futuristic German spa allows visitors to float in a pool of salt water while zoning out to underwater techno.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A mysterious artist-run cabinet of curiosities and library.

The bronze uniforms commemorate the vital role of women during World War II.

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

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

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

One part local history, 99 parts gruesome haunted house.

The broken skateboards that became a poignant memorial to a murdered skater.

This coffee shop lies hidden beneath a historic church.

The secret wartime bunker built on the platforms of an abandoned Tube station.

A unique tribute to the millions of animals who served and died for the British military.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

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

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

One of the world’s leading and most extensive archives on the Holocaust, the Nazi era, and genocide, this collection includes published and unpublished works, press cuttings, photographs, and eyewitness testimony.

A naturally mummified 2,000-year-old man.