Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

What appears to be an ancient Roman temple is actually a Catholic church.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

Exquisite examples prehistoric bas-relief carvings.

This imposing castle has stood for nearly a thousand years.

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

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

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

This bell tower is the only one of its kind in the Netherlands and was a symbol of prestige.

This ferry carries passengers across the Rhine propelled by no engine or paddles but by the river's current.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

A radio telescope for listening to the stars, based in one of the cloudiest countries in the world.

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

Go inside a revolutionary, cage-less zoo where 70 species of monkeys roam free alongside their human visitors.

The towering Pinocchio stands 63 feet tall in the Italian village his creator frequented as a child.

A factory director designed what was the world's longest suspension footbridge in 1923 so his employees could get to work safely.

Fortified medieval tower house with lovely roof garden.

An ancient necropolis of magnificent tombs.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

Incredible labyrinth of man made caves.

This disused VLF radio station is no longer in service but the surrounding town still bears its name.

This large open-air museum showcases the ordinary lives of the people of the Netherlands and pre-industrial crafts and practices.

This fairy tale forest hides scenes from some of the more obscure and bizarre Western nursery stories.