Golden cobblestones remember a time when this small alley was used to avoid having to give a Nazi salute.

Potato-peeling mannequins, Inca art, and a dangling tuber mobile help trace the history of fries at this Belgian museum.

The history and future of cannabis.

Amsterdam's former hotspot for public executions and dissections.

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

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A floating cat sanctuary on an Amsterdam canal.

An eerie, existential museum dedicated to the author of "The Metamorphosis."

One man's personal collection of KGB memorabilia is presented along with his strange viewpoint.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

The former home of France's controversial pop maestro is almost completely covered in ever-changing tributes and graffiti.

Paris' linguistic guide to the international language of, yes, love.

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

There are plenty of wonderful panoramic vistas in Edinburgh, but not many are hidden smack in the middle of the Old Town.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

It was once nicknamed "the most bombed hotel in Europe."

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

A museum marks and documents the site of the Titanic's launch.

The Liverpool street made famous by the Beatles is real.

The quiet field that inspired one of the most famous songs of all time.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.