An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

France's national museum of scientific and industrial instruments.

A surrealist timepiece by the artist of melting clocks.

A museum of magic with a Sadist past.

This massive library holds what was once the largest book collection in the world.

Abandoned railway line circling the city of Paris.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

Notorious artist squat renovated into legal studios.

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

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

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

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

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.

"In the Dark" Restaurant in Paris offers dinner in complete darkness.

19th century pendulum and a clock restored by a rogue group of guerilla artists.

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

The ruins of a Duke's bucolic dream, where camels once roamed alongside "Dutch" windmills and faux-Italian vineyards.

The first green space constructed on an elevated viaduct.

A French artist's vague warning hangs over Belleville.

This banal Parisian entranceway is not what it seems.

In this Parisian garden's grotesque former life as a zoo it fed exotic animals to the bourgeois and put humans on exhibit.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

A locomotive made from 185,000 bricks celebrates the town's pioneering railway history.

Built in 1911, the Tees Transporter Bridge is one of only six transporter bridges still in operation.