The hidden lair of an alchemist rediscovered in a 2002 flood.

In the best of all possible worlds, everyone will get a chance to see this statue in which Voltaire's heart is interred.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

Austria's ultra-modern art museum looks like Cthulhu's giant alien heart.

The world's largest historic armory was established by independent citizens to defend themselves from the wars of larger forces.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

The last woman executed for witchcraft in Europe is remembered in this Swiss museum.

Only a handful of these gorgeous historic waterwheels remain but even those are in danger from local unrest.

Hundreds of stone stairs and a winding medieval bridge connect this haunting Spanish island to the mainland.

A fountain standing as a testament to a doomed alliance.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

This delicate museum is devoted to the art and industry that once supported Cape Cod's oldest town.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

The "lovely red Vega" of the legendary record-settling pilot.

"The Wonder From Down Under," a worm shaped museum celebrating the endangered Giant Gippsland earthworm.

A stray meteor left this picturesque hole in the Australian outback.

Designed by Buckminster Fuller, this relic of the 67 Expo survived fire and ice.

The only surviving prototype of Buckminster Fuller's revolutionary car.

The smallest country in the world.

Unusual building appears to be haphazardly built from randomly piled bricks.

This extraordinary geological oddity resembles human-made pavement.

Luxury hotel turned into a refugee camp, then turned back into a luxury hotel.

The most peaceful "country" in the Middle East.

"We Seceded Where Others Failed."