Where's the best place for kids to hang out in Cologne? One safe bet would be to assume that many of them may be attracted to the Imhoff-Schokoladenmuseum. Guessed what that is? It’s the chocolate factory and museum which was initiated by one Hans Imhoff, who had a passion for making chocolate. Possibly inspired by the magic of Roald Dahl’s 1964 book “Charlie and the Chocolate Factory”, Imhoff purchased property to build his own chocolate museum in 1972.