The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

This elaborate stone bridge over the Neisse river has sat in pieces since 1945.

Germany's longest suspension rope bridge.

This monolithic slab of art metal crowns a German slag heap.

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

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

The highest cold-water geyser in the world.

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

On the highest peak in the Harz Mountains, science and the occult faced off in a failed attempt to turn a goat into a boy.

These jeweled relics have a scandalous and contested past.

Take a walk in a recreation of ancient Rome.

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

An officers prison camp believed to be impregnable by the Germans saw over 30 successful escapes.

The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

Eight naturally mummified bodies in glass coffins are housed in an underground crypt.

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

There are two dozen tanks just sitting in an open field in Lower Saxony.

The last bastion of Roman presence north of the Alps looms over a German town.

A Nazi concentration camp and Anne Frank's place of death.

This abandoned coliseum was intended to be a grand Nazi rallying ground before it was halted at the end of the war.

A former ironworks that was the first UNESCO industrial site.

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