This modest monument marks the only point of intersection between longitude and latitude in the Grand Duchy of Luxembourg.

Once the local rulers had gone these enchanting ruins housed common folk in an almost real life fairy tale.

This small chapel built into rock is the oldest place of worship in Luxembourg.

Rendering of a comic-book hero turned Luxembourg national symbol.

These exceptionally narrow openings between giant rocks will test your daring.

In the heart of Luxembourg's "little Switzerland" weaves a breathtaking natural sandstone canyon with a mythological past.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

Hundreds of hidden passageways weave through the old quarters of Lyon.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

This statue stands in honor of Antoine de Saint-Exupéry, the French author of 'The Little Prince' and an aviation hero.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

There has been an astronomical clock on this spot since the 14th century.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

An ancient monastery, a locked room, and a mysterious book heist.

For over 300 years this little carving has been the city’s good luck charm.

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

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

An ancient ossuary in Rouen.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

In 1927, a biplane disappeared while attempting to complete the first non-stop transatlantic flight between Paris and New York City. This memorial stands at the last place it was seen.

This symbol of the French Revolution still stands where it was first planted during the 18th-century.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

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