The Saint Stanislaus Route is a nice walk you can take that runs roughly from the magnificent Wawel Castle to the Jewish Quarter ( Kazimierz District ) .
The architecture along this route is magnificent ,obviously the castle is the most stunning but the innumerable churches and grand looking buildings really catch the eye,entering the Jewish Quarter the architecture changes a bit,a bit more rough and ready but no less beautiful ,it finishes at about Plac Wolnica in the Jewish Quarter I believe and is most definitely well worth checking out if you're planning a trip to Krakow,maps are available of the route in the tourist office in the city centre.