The 20-mile causeway that separates the Netherlands from the sea.

Lombardy poplars planted to imitate the size and shape of the Cathedral of Notre-Dame de Reims.

While most bridges allow roads to pass over water, this one allows water to pass over a road.

Building Men of War and Indiamen from Holland's Golden Age.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

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

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

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

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

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

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.

Indents in the pavement are all that remain from a grisly death machine in Paris.

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

This structure atop a craggy cliff in one of the most beautiful parks in Paris boasts an unbeatable view.