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

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

One of Ireland's most infamous prisons for rebels including men, women and children.

Street artists transformed this abandoned industrial neighborhood into one of Europe's largest graffiti exhibitions.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

This unique sculpture is often overlooked by pedestrians.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

A heated statue pays tribute to one of Sweden's great actresses.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

Early habitat dioramas and home of the elusive gaff, the skvader.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

A traveling Bronze Age sacrificial stone that was used to honor elves, fairies, and other woodland spirits.

This railroad track was so secretive that it was omitted from all maps.

The palace for King Gustav III was never completed, but the foundation remains tucked away in this city park.

The final resting place of the man whose name has become synonymous with greatness.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

A jumble of concrete on the corner of one of London’s terraced buildings is actually a work of art.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

Revel in the Victorian splendor of the world's oldest eating establishment inside a museum.