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.

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

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

Designed by the architect who also had a hand in crafting the Westminster Abbey and Bristol Cathedral.

This third-generation institution is one of the last in London that still cures its own salt beef for epic sandwiches.

This striking statue brings a scene from the African savannah into central London.

A masterpiece of Art Deco architecture hidden in plain sight in West London.

A famous burial ground with a history both grim and literary.

This record shop and unofficial black metal museum is an ode to Oslo's heaviest musical export.

This floating sculpture of ice is a poignant reminder of nature's power.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

A floundering Polish shipyard was once the soul of the Solidarity movement that capsized communism.

The phone booths in this English town have distinctly milky hues.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

What started as a tongue-in-cheek shrine is now a full-blown museum celebrating "The Hoff" and his longtime love affair with Berlin.

Concerts, art, offices, and a café in what used to be Berlin's first crematorium.

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.

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

For decades, a bottle factory dumped their waste into these waters—now it's considered the best sea glass beach in England.

A collection of maritime artifacts from the world's first volunteer life brigade.

This device was crucial to the Industrial Revolution development of Leeds.