Looking to this well-versed community for some suggestions. My MIL is (very generously!) treating the whole family to a week in Salzburg over Christmas. We will have some time before and after the week in Salzburg and were exploring flying into Vienna before and flying out of Munich after, mainly because both offer direct flights to New York. This would give us 2 and a half days in Vienna and up to 4 days in Munich. We have never been to any of these places are will be traveling with our two daughters (ages 22 and 19). We are also researching day trips from Salzburg, as we will have a week where we are based there.
Would love to hear from anyone who has done a similar trip. Thank you!