A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

Sky ships, planes, and portraits left as unique tokens of hope and thankfulness.

A crumbling island fortress that seems to be covered in a field of stone crosses but is simply incomplete.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

Massive puppet-automaton machines created by French artist collective Machines de l’Ile.

The celebrated eyesore created by starry-eyed sweethearts.

Once a 19th-century brasserie, this McDonald's exterior celebrates Alsatian design and the "King of Beer."

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

This bridge was constructed from the rubble of the infamous Bastille.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

This museum houses an imposing skeleton army comprised of creatures great and small.

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

A haunting collection of the vanished and disappearing natural world.

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

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

The massive machine creates cracking displays of indoor lightning.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

An unassuming secret door once led to a legendary watering hole.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

A dilapidated dock tells the story of Titanic’s missed arrival.