Prague - Krakow - Vienna

Hello to everyone as this is my first post here :).
I am planning on driving this summer from Prague to Krakow and then back to Vienna and was wondering if anyone has any interesting and unusual places to recommend to visit along the way apart from Auschwitz and the above mentioned cities.
Thanks

The salt mines in Krakow were surprisingly cool (literally and figuratively). There is a catherdral carved out of the salt for the miners.

I was going to mention this. It really is quite unique in my experience.

I’m really bummed I never made it to Český Krumlov. It sounds spectacular.

My brother spent some time in Krakow a few years back, and the salt mines were the thing he described as the coolest. Auschwitz was probably the most thought provoking, according to him, but the salt mines were the most neat and interesting thing of the entire trip.

It’s been years since I was there, but Vienna has an outdoor food/movie festival in the summer. It’s a lovely time and they often choose movies that work well for non-German visitors (concert movies, ballets, etc.).