...Why so many did undertake it is one of the questions that the museum, known in German as Auswanderer Haus, or Emigration House, which opened in this busy port city a few weeks ago, is intended to answer. The spacious, modern building, framed in latticed wood, overlooks Bremerhaven's Old Port, created in 1837 in large part to take advantage of the wave of emigration to America that began around then.... If the Ellis Island Immigration Museum in New York Harbor tells the story of arrivals, the museum in Bremerhaven tells the story at the opposite end of the experience: the...