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

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

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

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

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

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

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

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

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.

Rainwater transformed this old quarry into a peaceful pond you won't find in most tourist books.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

A darkly erotic open-air statuary in Catalonia.

This space rocket-like Buddhist stupa sits atop two giant arches and can be seen from out at sea.

This Colombo wetland is an unlikely wildlife haven just outside the capital city.

A Sri Lankan tea factory's ironic take on the Los Angeles landmark.

A massive fallen water tank bombed by the Tamil Tigers in the final stages of the long Sri Lankan Civil War.

This Sri Lankan cemetery is the final resting place of sci-fi legend Sir Arthur C. Clarke.

This peaceful, round shrine in the middle of the Sri Lankan jungle acts as a beacon of peace.

Pettah's beautiful floating market was once a stinky canal in a sketchy industrial area.

This elaborate temple was built around one of the Buddha's teeth.

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.