HAMBURG, Germany (AP) — Britain's Prince William and his wife, Kate, are wrapping up a three-day trip to Germany in Hamburg, where they're attending a concert for children in a spectacular new concert hall.

The couple, known as the Duke and Duchess of Cambridge, kicked off their two-nation European tour in Poland earlier this week before visiting Berlin and Heidelberg. They're traveling with Prince George and Princess Charlotte, though the children haven't appeared at most of their public engagements.

On Friday, they took a train from Berlin to Hamburg and visited the city's International Maritime Museum, which houses a model of Britain's royal yacht Britannia.

The royals viewed Hamburg's harbor from the new Elbphilharmonie concert hall, and joined 350 schoolchildren to hear a concert with excerpts from Beethoven's Fifth Symphony.