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

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

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

A monument to the man who almost killed Hitler.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A slice of central Asia in the middle of Berlin.

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

The history and future of cannabis.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

Sail in for a ’dam good slice.

This cheese shop also houses a museum devoted to Dutch dairy.

The attic of a four-century-old canal house hides a clandestine church.

A floating cat sanctuary on an Amsterdam canal.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

A tiny, unmarked beer and whiskey bar above an Ethiopian restaurant in West Philly fails to conceal live bluegrass.

Yo, Adrian!

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

A layered tribute to the work of mosaicist Isaiah Zagar.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.