This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

A massive marble foot is tucked away in a small alley near the Pantheon.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

Among the busts of heroes of the Roman Republic of 1849, there is also a statue of a boy and his dog.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

A curious collection dedicated to human and animal anatomy and pathology.

A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

Caves famous for the dragon-slaying saint who lived there.

Switzerland's oldest public observatory is an important part of the Zurich cityscape.

This eclectic architectural gem played witness to Zurich’s colonial past.

Though it may look like a businessman's lost luggage, this case suspended under a highway bridge is actually a contemporary art installation.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.

Designed to mark the geographical center of France.

Admire endangered plants in a verdant garden that looks straight out of a Monet painting.

This 1,400-year-old abbey was once a powerhouse for music and intellectualism known across Normandy.

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

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.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

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

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

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

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

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.