This clifftop arch is a natural stunner.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

2300-year-old Roman road connecting the empire.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

Metro station with a claim to rock n' roll fame.

Tiny memorials honor individual victims of the Holocaust.

The last remnants of a massive medieval wall that once encompassed the city of Berlin.

Cold war icon and onetime "hole" in the iron curtain.

A restaurant and observation deck built in a unique broadcasting antenna.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Started as a kitchen garden, now the second largest botanical garden in the world.

The celebrated eyesore created by starry-eyed sweethearts.

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

Immortalized by artists, this church incorporates a medieval lighthouse into its shoreside structure.

Napoleon's childhood home is now open for people to explore the beginnings of France's short general.

This mountain trail inspired Nietzsche to complete his magnum opus.

A quaint medieval millhouse hovers surprisingly above the waters of the Seine.

This ancient theater was once the home of fierce gladiatorial battles.

Historic medieval fortified city in southwest France.

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.

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.