France's national museum of scientific and industrial instruments.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

A font of vintage porn on the silver screen.

Mysterious man-made rock piles form an ancient cemetery on this rocky beach in Norway.

An intricately carved Viking church overlooks a glistening fjord.

A thin pane of glass keeps visitors from sliding off this futuristic skywalk.

Walk 2,300 feet above the ground on the "Troll's Tongue."

Walk behind a 50-meter-high waterfall.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

The former home of Norway's greatest romantic composer.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Hotel designed by indie graphics artists.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

Twisted buildings adorn the banks of the Rhine river.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

Berlin's oldest surviving academic architecture hosted decades of animal dissections.

A collection of abandoned typographic signs from Berlin and beyond.

A museum dedicated to a Cold War era sausage.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

This conical hill was built as a testing ground for an engineer known as the Glider King.