Avant garde house of Pierre Cardin on the Cote d’Azur.

This Paris art space celebrates the creativity and ingenuity that springs from abject poverty, especially in Africa.

Sleep in a climate-controlled plastic bubble for the night.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

This charming cobbled backstreet is the most Instagramable street in Paris, much to the residents' annoyance.

Paris' linguistic guide to the international language of, yes, love.

The oldest stone house in Paris was built by its most famous alchemist.

France's most famous cemetery, with some of its most curious tombs.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

The risqué mixed-media sculptures are supposedly a metaphor for Czech politics.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A church of bones, decorated with 40,000 human skeletons.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

A UFO-shaped event building originally intended to be a science museum showcasing the future.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

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

Museum preserving torture methods from the past.

The world's only museum devoted to the wonders of fluorescence.