This Parisian café sticks almost exclusively to an ethos of reuse.

France's national museum of scientific and industrial instruments.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A museum of carnival attractions where you are invited to ride the rides.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A Spanish artist builds his own castle.

A majestic hotel for dreamers rises from the center of a fairytale wood.

You can cross from one country to another in a single hop on this little bridge.

Rumors and legends of secret Nazi activities surround this eerily remote island mansion.

A completely underwater art museum sends a stark message about humans' impact on the environment.

A grassy pyramid named after a French battle.

Colorful and chaotic stacked hotel in North Holland.

This small town in the Netherlands has no roads but instead, miles of canals and over 100 bridges.

Artwork tucked within the trees greets visitors with surreal sonic experiences.

Climb inside an iron crystal magnified 165 billion times its normal size.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Nature's biggest mammal swims in landlocked Oklahoma.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

Traveling collection of amazing automata.

This Los Angeles animation studio is keeping the wonder of stop motion puppetry alive.

Tucked away amidst some of the most famous addresses in the world is New York's only fraction of a street.

Jumping-off point for a climb up Mt. Everest is the most dangerous airport in the world.

This surreal art house looks like a geometric version of a small chapel.

This skewed English house has looked like it's going to fall over for centuries.