This massive sculptural work outside of Paris was four decades in the making—and it's still not quite complete.

A total of 22 tiny bridges cross this canal of the Yvette River, forming a unique trail.

Explore the art and history of intricate, hand-crafted tile designs at this small museum.

Erosion left these fascinating granite formations strewn across fields and mountains in Burgundy.

Was the twisted roof on this church's belltower an intentional design or a happy accident?

A 2017 crowdfunding campaign saved this historic castle from being destroyed.

During the 17th-century, orphaned infants were placed in this barrel to be cared for by the hospital.

Every half hour, the flow of this unusual spring cycles between a rush of water and barely a trickle.

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

Inaugurated in 1921, this is one of many statues in France dedicated to the people who died during World War I for their country.

Once known as one of the finest tourist railways in Europe.

A fortified palace in the shape of a ship on the Thiou river.

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.

The way that light hits a stained glass window on a specific day is one of many "clues" to a mysterious treasure.

Designed to mark the geographical center of France.

Science fiction's grandfather has a fittingly marvelous tomb.

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

Tucked away in downtown Westerly is America's first shark history museum.

In the middle of a New England forest sit the crumbling ruins of World War II-era ammunition storage bunkers.

The sea urchin sculpture is an unusual commemoration of a New England town's seafaring history.

A freighter full of exotic animals ends a harrowing voyage impaled on uncharted rocks in the Boston Harbor.

Hill-like structures formed by glaciers and sandy spits of land.

This plaque is dedicated to one-half of the Magliozzi brothers and their hit radio show, 'Car Talk.'

A three-piece musical sculpture installed between the subway tracks at Kendall Station near MIT.