Vikinger museum 'Haithabu' in Schleswig, Germany is cool one day experience. It's all about vikings in northern part of Germany - how they lived, what they did, where they travelled, etc. It's divided into two sections - outdoors with reconstructed viking village (sometimes there are actors dressed like vikings) and indoors with all the exhibits and maps. There are souvenir shops both in the indoors and outdoors section. Schleswig is situated cca. 1 hour by car from Hamburg.
Schleswig, Schloßinsel 1, DE
POINT (9.54101 54.51178)