France's national museum of scientific and industrial instruments.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

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 proud Teutonic warrior rises out of a German forest heralding a victory and measuring lightning.

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

The castle where Martin Luther secretly translated the New Testament from Greek to German while in hiding.

You haven’t properly toured a winery until you’ve slept in an actual wine barrel.

An amusement park on the grounds of an unused nuclear power plant, with a swing ride inside the cooling tower.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

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.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

A former ironworks that was the first UNESCO industrial site.

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

This incredible stone temple is a monument to death, victory, and fantasy architecture.

The world's oldest rose is so tough it survived being bombed in World War II.

This former steel and coal plant is now a neon-lit industrial fantasia.

A German apartment building hosting as many trees as human occupants.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

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

Between Neo-Pagans and Neo-Nazis, these strange rock formations have a curious cult following and a very strange history.

A small but immensely extravagant palace built by the "Night King."