A new museum in Hamburg, Germany, is devoted to memorializing the journeys of the millions of emigrating Europeans who left for America from the city’s port. “The exhibits cover every stage of immigrants’ journeys — from the conditions that led them to flee their homelands to arrival on Ellis Island and beyond. Though Mr. Birkner said the museum was not aimed at any particular audience, the colorful and unorthodox presentation styles, which sometimes border on kitsch, should appeal to younger museumgoers.”