In case you are interested in history of art, the chapel ("Johanneskapelle") located on the outskirts might be worth a visit! From outside this chapel is not very attractive, at least in my opinion, but inside you`ll find very important and famous romanic frescoes of the 12th century. They are showing for example strange cat-mice wars :), which is rather unusual! Main church in Pürgg is called St. Georg, there is an idyllic cemetary around it. The church also dates back to the 12th century, and therefore equally has romanic origins. It was transformed in gothic style though. Unfortunately the church was closed when I was visiting, so I do not know how it looks inside. I just had a spooky experience on the cemetary- there is a crypt with exposed skulls and bones similar to the "Bone house" in Hallstatt!
This restaurant was first mentioned in the 14th century and is very traditional. It is nice for a family lunch on Sunday noon as well as for a romantic dinner. It is traditionally furnished and has a lovely veranda (verandas are typical for that part of Austria) with a nice view. In summer they have a lovely garden just across the narrow street. Obviously the restaurant is well known amongst tourists, as I actually saw more people from Vienna than locals when I went there last Saturday :). I noticed that their prices are a bit above other country restaurants in this area. The food (soup, strudel filled with spinach and feta cheese, salad and pasta) was ok but nothing special - actually i think you could get a better meal for a better price for example at restaurant Gabriel in Irdning about 10 minutes away from Pürgg. The ambience though is lovely!