The town is well known for its superior glass making through the years and even has this reflected in its flag designed by Jarig Bakker (http://www.crwflags.com/fotw/flags/cz-pt-le.html).
Today, however, in the interest of time we didn't visit the glass blowers since we wanted to get to Passau (still some 68 km away) and have enough time to see the world-famous Bohemian glass museum (posting on that coming soon).
We shall visit the glassworks in a couple of weeks for a full days adventure there (stay tuned!).
But, we did stop at Jihočeská Keramika to see their own ceramics, stained glass and the types of Bohemian crystal they were selling.