Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

1898 German railroad depot museum with working engines, steam train excursions, and hands-on displays.

This German bone house contains the remains of some 20,000 souls.

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

The last Tsar of Russia constructed this private church just so he could attend services when visiting his wife's hometown.

A stonemason's hilarious revenge came in the form of this peculiarly positioned gargoyle.

Flowers have mysteriously appeared on her effigy every day for the last 150 years.

The world's first jet-powered aircraft were assembled by the Germans in this secret factory in the forest during WWII.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This natural "sea of stones" was once used by the Romans as a quarry.

A historic steam train meanders along one of the most scenic rail routes in Germany's Black Forest.

World's largest barrel containing an inn.

This fascinating museum in an old water tower holds the world's largest collection of Vodou artifacts from western and central Africa.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

The jaw of one of humankind's earliest ancestors on display at an overlooked geology museum.

This Nazi-built amphitheater was constructed on a sacred mountain site used by various German cults.

This 18th-century folly is one of Europe's rare "garden mosques."

It's good luck to be mocked by this monkey.

A preserved college lock-up that recalls a clubhouse approach to discipline.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

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

Aged nearly 1,700 years, the world's oldest bottle of wine is probably still drinkable.

This magnificent church allows travelers along one of Germany's busiest roadways a chance to rest and reflect.

This Rococo church is known as the most beautiful village church in the world, and does not disappoint.