This sea-based blowhole releases seawater when waves hit the coastal caves.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

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

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

Art and a pun, all in one.

Inside this Jewish cemetery is a memorial to soldiers who deserted the German army and were executed.

Once a path for Jewish funeral processions, this unassuming alleyway is rich in local lore.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

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

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

Berlin's natural history museum houses the world's largest mounted dinosaur and the late beloved polar bear Knut.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

Dancing skeletal figures pay homage to a medieval mural destroyed during World War II.

The small alleys in Lübeck's Old Town are a result of medieval urban sprawl.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

A stunning two-story timepiece within a medieval Brick Gothic church.

This concrete residential area doubles as an open-air gallery.

The best bagels in Berlin are tucked away in an independent bookstore.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

Where once there was a train station bathroom, there is now this German burger joint.

German-style coffee and cake, just like Oma used to make it.

This massive statue is the personification of Bavaria and the first colossal statue of the modern period composed of bronze.

A fearsome dragon clings to a corner of Munich's city hall.

Daily jousts and dancing barrel makers in Munich's mechanical clock.