Where would be a good city (or two) to end (or otherwise adjust) the itinerary below, taking time, distance, and quality of sightseeing into account?
My partner and I have been to Europe three times, covering many major cities that Rick suggests. We're going back at the end of June for two weeks, likely starting in Paris for 3-4 nights (where we've already been twice but want to return to see Versailles, and to visit some old favorite sentimental spots) then heading to somewhere in Switzerland, where we have not yet been. Our main goal is to experience the Alps for 2-3 days...we're not as interested in the larger cities in Switzerland (Chamonix, France might also suffice).
We'd like to head from there toward Vienna, Austria for 3-4 nights, where we have never been. (It looks like a long distance on the map, perhaps an entire day's train ride, so perhaps we can take the night train, fly, or add a city before Vienna).
We could end the trip in Vienna, and extend time in each prior city, but are seriously considering adding one more stop, maybe in Eastern Europe or elsewhere. We've already been to Prague and like it very much. We're considering Krakow or Budapest, but are open to others.
Note: Munich is in the area, but we have been there and don't want to return right now. We've also been to Berlin and Dresden.
We're in the early planning stages and aren't stuck on any one city, but are excited about the Alps and perhaps visiting Paris again.
Thanks in advance,
-Bobby