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

The world's largest reflecting pool is just two centimeters deep.

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

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

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

This artistic temple brings together multiple architecture styles, but is only an example of one.

Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

Massive galleon from a box-office bomb docked in Genoa.

For hundreds of years, this huge figure has been blessing visitors before they explore his body.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

The secret medieval communication system will whisk your words above the noise of the crowd.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

Two stone columns flank the grand Venice square, but there were supposed to be three.

The titular "little arch" near this Italian resort is one of the most popular diving spots in the country.

A map of Italy made entirely of trees.

This one-of-a-kind archeological site is home to strange prehistoric ruins, the original use of which is still a mystery.