135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

The world's tallest bridge is also possibly the most elegant.

The history of radiation is on safe display at the foot of a radiation science laboratory.

An overlooked marble is the only surviving in-place 18th century example of the measurement that changed how we define distance.

Ancient paintings known as the "Sistine Chapel of Cave Art."

The famous winding walk at Chartres is surrounded in mystery and myth.

A beautiful and classically designed villa, with an hourly infestation of monsters.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

Artist and musician Will Menter creates musical sculptures.

An icy lake tucked among jaw-dropping alpine panoramas.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

Beautiful carved tunnels.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

Do these monsters look familiar? The gargoyles on this church are all from pop culture.

One of the great treasures of Neolithic art lies within this carefully constructed pile of rocks.

A remote hilltop covered in giant monoliths haunts the Brittany countryside.

Ride the rails on a train harkening back to a 19th-century marvel.

Journey through the ruins of this ancient Roman temple dedicated to the god of war.

In France, a medieval-style home pays homage to an intrepid explorer who discovered Québec.

A small island that was once a key Axis fortification during World War II.

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

The smallest port in France is named after the pirate who created it.

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

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.