Itinerary Suggestion

Do you like big or small cities? Where will you be traveling from in Austria? Germany is well served by trains. Without knowing more about you, I would recommend Berlin and Munich. Both would also have interesting day trip options.

Thank you for the info. I am a student of history, and languages (French and German) so those are my interests, but I am really just interested in seeing the native culture. I am pretty competent in my German speaking skills even though I still have to ask someone to repeat something now and again, especially if they speak a dialect. I am an American so the Visa thing is not a problem for me. My university is in Klagenfurt, which is four hours from Vienna by train, and five hours from Munich. Is there a rail pass I can buy to travel across the whole country? I would like to start from the south and spend that free time I mentioned before going across the country. Does anyone have any large or small city recommendations I am open to both?
Nicholas

Munich and Berlin are both great places. However, don't ignore the smaller towns, like those on the Romantic Road that runs from Wurzburg to Fussen/Garmisch.

You could do Munich then the Romantic Road from the southern end, then head to Berlin. The Rhineland area is another great area.
https://www.romanticroadgermany.com

which era of history are you studying?

Are you a high school student or a university student?

I'm a student at the University of klagenfurt and my focus is military history and diplomacy in modern Europe (1750-1991) roughly.