I grew up in the area between Munich and Salzburg.

Quite a nice area. It all comes down to your interests. For a start (for places besides Munich and Salzburg), I would suggest to have a look to an answer I gave quite some time ago:
Originally Posted by
Scrooge McDuck
Well, I did not grow up in Salzburg but about 90km north of it.
Salzburg has way too many things to do in the summer months. Public transportation is pretty good and train connections to the rest of Europe are not bad either.
I strongly recommend to get
In terms of sightseeing, I can recommend three places:
If you have specific questions, pls. feel free to PM me.