We were in Salzburg for Christmas and they have an excellent museum to the K.u.K IR 59. I will post pictures. It was very sunny the day we went, so I apologize for the glare on some of the pictures.
Thanks for taking the time to share your experience with us, the Festung is really cool.
I like Salzburg with the narrow streets it can get a bit crowded depending on the time of year, but you can always find a wonderful Konditorei to relax in with some Coffee and Cake.
So many beautiful places in the oldtown.
MFG John Josef