My husband and I will travel to Austria and Czech Republic in early September. We will be in Vienna for 6 days and then will have 7 days (we travel back to the US on the 8th day), to travel and site see. On my list of places to see are the following: Wachau Valley, Salzburg, Innsbruck, Linz, Cesky Krumlov (was told to stay overnight here) and Prague (was told to allow 4 days here).
Please help narrow my scope, deletions of destinations are ok. I just don't know which ones are a "must see." Suggestions with transportation ideas from city to city would also be very helpful.
Thank you so very much!