Art and armour fill every inch of this rich kid's Italian villa.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

Secret refuge and museum of the Duke of Florence.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

The oldest operating pharmacy in the world features 800-year-old recipes.

This small red school was where Germany signed their surrender during WWII.

Site of one of World War I's most horrific scenes.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

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

Beggars were miraculously "cured" of their fake ailments when they returned home to this 17th century Paris slum each night.

Since ancient times these picturesque springs have been providing bathers with healing waters.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

Bits of architecture from a town destroyed in World War I now decorate this hotel garden.

Perfume museum and library.

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

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

Sleep in a climate-controlled plastic bubble for the night.

At Monet's beloved home you can still see the Japanese bridge, waterlilies, and weeping willows that were the subjects of some of his most iconic paintings.

Historic medieval fortified city in southwest France.

This modern French ossuary contains the jumbled bones of 130,000 WWI soldiers.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

One of the greatest maze designer’s greatest mazes.