Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

A former Latvian headquarters of the brutal KGB secret police is now open as a grim reminder of their atrocities.

Rising from the sea like a stone monster.

This isolated island is often capped by its own fluffy cloud.

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

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A unique Holocaust memorial tells the personal stories of the Jewish residents exiled from greater Berlin.

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