Germany has its very own Centralia, whose spark remains attributed to "spontaneous combustion."

The mass grave of the 27 victims of the "Vampire of Hanover."

This small Bavarian graveyard is filled with empty graves for German soldiers lost during the World Wars.

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

A small concrete monument remembers a German cold case involving incest, farm tools, and psychics.

This German "living museum" is maybe a bit too immersive.

Fantastic views and thousands of love locks.

The NASA scientists behind Apollo 11 started out developing Nazi weapons at this abandoned German rocket factory.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

This old wooden funicular railway leads to a cemetery in the forest.

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

A memorial for a young woman and her ghost, which are claimed to have caused countless deathly shipwrecks.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

This East German military command bunker was ready for World War III.

After a nearly successful attempt on Hitler's life, the conspirators met their fate in the courtyard of this Berlin building.

A small square plaque marks a failed assassination attempt that could have changed history.

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.

A Nazi concentration camp and Anne Frank's place of death.

Germany's Glienicke Bridge has a shady history of clandestine meetings, espionage, and spycraft.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

Model Trains and Much More in Hamburg.

This painted Lego bridge is the product of over a century of locomotive history.

One of downtown Berlin's last reminders of its Communist past.