There is a strange little carving of a person seemingly crushed by a pillar behind the remains of St. Thomas Aquinas.

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

A medieval church with largest and oldest collection of Renaissance frescoes in France.

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

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.

If you look closely at the oldest bridge in Paris, you might notice hundreds of ugly faces leering from its sides.

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

Pitié-Salpêtrière was the dumping grounds for women who received the dreaded diagnosis of "hysterical."

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

An ancient ossuary in Rouen.

One of the oldest and largest wooden churches in France was very evidently constructed by shipbuilders.

An art-filled botanical garden and former dyeworks hiding in plain sight.

This mountaintop mariner’s church is packed with model ships and nautical art while hosting an annual maritime festivity for the townsfolk below.

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.