An underground city of salt.

The world's oldest known salt mine.

The largest ice cave in the world is thought to be the entrance to hell according to Austrian legend.

The medieval network of canals hidden underneath the city is opened to explorers each year.

This 19th century cyclorama acts like an analogue time machine to a different era.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

This strategic isle was once swapped between empires and almost entirely destroyed in a bomb explosion.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

A man-made slag heap that you can "ski" down, and is home to the world sandboarding championships.

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.

A typical crusty old museum this isn't.

Amöneburg is a town perched on top of a basalt mountain in the middle of an ancient meteor crater.

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

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

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

When a medieval fire claimed the original St. Stephen’s Cathedral, it sparked a pattern of unquenchable organ building.

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

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Ample proof that watery ends make for well-preserved, millenia-old mummies.

Enter the cabin of a life-sized Hindenburg replica.

The "Prussian Versailles" that is as glorious today as when it was built.

A striking 12th-century-style castle built on the edge of a cliff.

Soaring over 6,000 feet in the Bavarian Alps, this beer garden was once Hitler's 50th birthday present.

Ruins of a German Castle on top of a towering stone pillar.