This mine is home to the largest man-made hole in Europe.

The old castle kitchen where nucleic acid was first isolated is considered the "cradle of biochemistry."

This Cold War–era fallout shelter was actually a storage facility for the nation's emergency currency.

This fountain tucked away in a park is the focal point of the only "Green Basilica" in Germany.

This natural hill rose another 130 feet from the debris and rubble added after World War II.

It has an American Dream Car exhibit, Europe's largest Formula One collection, and many, many mannequins.

These abandoned Cold War-era bunkers are now a designated refuge for endangered bat species.

This famed marionette theater and museum is bursting with imaginative string puppets.

The remains of three Luftwaffe launch pads designed for manned anti-aircraft missiles.

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

The atomic museum in the basement of this German castle displays long strands of replica uranium cubes.

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

A steam powered train that runs on city streets.

A delightful but little-known public observatory and planetarium in Munich.

Remnants of a cone-shaped Nazi bomb shelter.

Giant wind turbine with observation deck at the very top.

Walk inside a half mile long crevice right outside the town of Garmisch Partenkirchen.

The only microgravity tower in Europe can produce nine seconds of weightlessness.

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

A German town is growing a building out of trees.

An old slaughterhouse now holds the largest collection of pig artifacts.

Built to test magnetically levitated elevators, the tower also boasts Germany's highest visitor platform.

Four-story slides send people whizzing through the math department at this Munich university.

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