This irregularly shaped sea fortress has defended not one but three different sovereign states.

A museum dedicated to a Cold War era sausage.

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

Eat your Big Mac in a DC-3.

This airport also offers travelers the chance to view thousands of years of Turkish history.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

This center tells the story of one of the most famous battles in Irish history.

An abandoned film set location for a remote spaceport in a galaxy far, far away hides in the Tunisian desert.

The original movie set for the home of 'Star Wars' hero Luke Skywalker.

Buildings from the fictional planet of Tatooine still litter the Tunisian desert.

An Italian restaurant became a rock-and-roll hangout and the lair of the "Hollywood vampires."

An impressive museum dedicated to the resource that made the Scandinavian country rich.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

Historic cuisine meets fine dining in a hotel-restaurant overlooking Hyde Park.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

Relics from an era long gone, sit idle outside this Estonian museum.

This stoic bronze soldier stands as a symbol of Russian sacrifice or Soviet oppression, or maybe both.

"There's nothing there," and other lies the KGB told us.

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

Stockholm's deepest subway station is also a stunning ecological wonder.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A museum in the building where Nazi Germany signed its surrender tells the story of World War II from the Soviet perspective.

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

The final resting place of many of Germany's most famous communists.