There is a beautiful path along the vineyards above Wettington/Baden. It starts at Schloss Schartenfels.
http://www.schloss-schartenfels.ch/
Easiest would be to take the train to Baden, walk through the old town, cross the wooden bridge and take the steps on the other side of the street up (about 500...) but it's worth it.
I was up there this afternoon. Gorgeous views over the valley. On clear days you can also see the Alps from up there.