At the foot of an active volcano sits a church miraculously spared by its lava.

A museum dedicated to the history of sugar cultivation on Réunion island.

Réunion Island's highest point is a two-million-year-old volcano and a paraglider's paradise.

At the center of an island in the middle of the Indian Ocean is a deep chasm ringed by tall waterfalls.

Order a boozy baba au rhum at the oldest patisserie in Paris.

Montmartre's sole surviving windmill became an iconic landmark for 19th-century painters, artists, and bohemians.

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

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

Science fiction's grandfather has a fittingly marvelous tomb.

The unique design of these skyscrapers in a Paris suburb led to them being nicknamed "cloud towers."

César Baldaccini's iconic sculpture of a 40-foot thumb stands tall in La Défense.

The Cimetière des Chiens et Autres Animaux Domestiques is one of the oldest pet cemeteries in the world.

This unassuming sculpture depicts grandfather of science fiction Jules Verne and his brother as children.

The encased skull that is widely believed to belong to St. John the Baptist.

A sublime medieval path adorns the marble floor of one of the most beautiful Gothic cathedrals in France.

A dad joke was inevitable when a member of this 19th-century chocolatier family married the president of France.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Perhaps the most spectacular grotto along the Algarve coastline.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This Parisian gem is one of the most incredible ethnographic museums in the world.

Bordered by forest on three sides and the ocean on the other, the Great Dune of Pilat is the highest sand dune in Europe.