Hamburg had the largest Jewish community in Germany before the second world war. There are many commemorative cobblestones (Stolpersteine). Some buildings preserved from the concentration camp that was based at Neuengamme now serve as a memorial.
In total contrast, there is the Wunderland. The model railway should not be underestimated – and it HAS absolutely HAS to be booked in advance. Do it early, our film shows how to get there. If you are on a tour with it included it will guarantee entry but your time there will be limited by the tour. It is a must, whether you like models or not!
Just up the road is a coffee house and a roasting factory inside. Worth a call, see the film.
It has possibly the best Christmas market on the ocean cruise circuit.
The Reeperbahn is not near the centre, it may be bear where your ship docks.