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

Eighty million natural history specimens call this gargantuan museum home.

The celebrated eyesore created by starry-eyed sweethearts.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Macabre astrological automaton clock dating to the late 1400s.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Hidden amid the tropical forest in the Caribbean Sea are the decaying ruins of the Cocaine King's luxurious island party home.

A labyrinthine museum chronicling the history of African culture in Brazil.

This park feels like a lush little jungle full of wildlife nestled within São Paulo.

This singular art museum in São Paulo is unique inside and out.

The bookstore with bookshelves built into unlikely places.

A snake farm famous for its venemous varieties.

A huge boat-shaped hotel with a blood red pool and other oddities.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

Berlin's beloved bear is immortalized at the Museum für Naturkunde.

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

Tiny memorials honor individual victims of the Holocaust.

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

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

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

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

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

This statue of a falling man commemorates a teenage martyr of the Hungarian Revolution.