Traveling to Graz, Austria from the U.S.

So i am visiting family in Graz, Austria. I've been flying out every other year to visit, trying to land in different cities each time to see new places. So far the major cities have been Munich, Salzburg, Vienna, Budapest and Ljubljana. I plan on flying out June of 2027, but currently have no idea what new city to land in and what stops to take to "sight see".

As of right now, the only ideas I have are flying into either southern France, Switzerland, Berlin or Italy. But I have no idea where to land or which stops to take as a tourist.

I know its a pretty wide and bland question to ask, but any help or suggestions would be welcomed and GREATLY appreciated.