Home of the largest single-phase AC generator in the world.

The architect of this fanciful complex called it an "oasis for humanity and nature in a sea of rational houses."

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

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

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

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

Cold war icon and onetime "hole" in the iron curtain.

The most visited, and possibly most controversial, museum in Germany.

One of downtown Berlin's last reminders of its Communist past.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

A beautifully eclectic mix of architectural styles.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

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

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

An intricate and amazing house built by architect Karl Junker.

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

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

This unique Renaissance castle was turned into a home for Nazi occultism.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

The mountaintop inspiration for Umberto Eco's "The Name of the Rose."

This winding road through an Italian canyon may be the most scenic drive in the world.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.