Although Lübeck is now perhaps most famous for its marzipan, for a time in the medieval era, it was one of the most important trading centers in the world. For decades, the island city itself was the main attraction, its pedestrian-friendly streets lined with tidy gabled houses in the brick Gothic style popular at the height of the Hanseatic age. But in 2015, this UNESCO World Heritage site gained a new and important museum sure to fascinate anyone with even a passing interest in European history.