Will be traveling to Austria next week arriving Wednesday afternoon and flying back Sunday afternoon (both in/out of Zagreb, Croatia airport). My goal is to have a main hub for my hotel, so thinking the City of Graz, Austria and then be able to visit Vienna and surrounding area's given that it's only a 2-2.5hr drive from Zagreb > Graz & Graz > Vienna. Will be renting a car for the whole stay so I'll be able to drive around to any recommendations. Of course since it's my first time in the area, I plan on hitting up all the touristy spots (see list below) but would love any other recommendations outside of these from people who have there before, some hidden gems worth looking at while in Graz, Vienna or on the way - Recs of food places are also welcome!

Riegersburg Castle ( Graz Surrounding Area)

Eggenberg Palace (In Graz)

Uhrturm & Schlossberg (In Graz)

Kunsthaus Graz (In Graz)

Forchtenstein Castle (On the way to Vienna or on the way back to Graz)

Burg Liechtenstein ( On the way to Vienna or on the way…