Stop tips for Germany Northeast searched

A happy WE all! Females and I want to tour the motorcycle road Germany east route at the beginning of next year, for easier time planning I divided the route into 3 parts for 3-4 days each. Route planning depends as picture. I now look here for tips, where it is worth stopping (if necessary also with small detours). Must be now not only motorcycle related, females also like locks and something like that, Schloss Schwerin is therefore already on the to-do list. So erstma I’ll get out where YOU think you should have seen / experienced that, “no, that’s nothing for us” we can still say. Thank you!