The monument honors the first (and for a long time, only) African-born philosopher to teach at a German university.

A memorial to Brazil's little-known role in World War II.

Be it nature, art, or abandoned military architecture this eclectic German "museum" has you covered.

A top-secret bunker now turned museum, is an eerie look at what life would have looked like in the event of nuclear war.

This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

The narrowest street in the world is in danger of closing up entirely.

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

A modern museum dedicated to the fairytales and dictionary work of the Brothers Grimm.

A series of haunting wooden totems are hidden in the woods surrounding a German environmental center.

The first (but not only) upside-down house in Germany.

The 3,600-year-old archeological sensation is considered to be the oldest representation of the cosmos.

A collection of artworks exclusively created by the mentally ill that was almost burned by Nazi culture police.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

Remnants of an exploded schooner and wrecked submarines form a breakwater.

Slaughterhouse Five opens its dank doors to fans of Kurt Vonnegut.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

No need to strap in for a "ride" on this walkable roller coaster.

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

This "floating railway" is one of the world's oldest monorail systems.

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

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

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

An eerie, derelict amusement park in Berlin.