Travel recommendations south germany?

Hello Reddit!

I absolutely love the south of germany and plan to visit again soon. I'm currently putting together a road trip for my next vacation and would like to ask for recommendations.

Do you have some recommendations for some beautiful cities, really cool museums and unusual fun activities to do in between?

(I've already been to Munich, Nuernberg, Bayreuth and Bamberg. Amazing, and I'd love to see more)

Thank you!