There are plenty of wooden churches all across Central and Eastern Europe, and most seem to be inscribed on the WH List as well. Still, these 2 are definitely worth seeing, and their architecture is really impressive. I first went to Jawor, then to Swidnica - both towns are not too far away from Wroclaw, and a visit to both makes a nice day trip, which is also reasonably easy to do by public transport (although a bit time-consuming). Both churches are quite impressive, although the one in Swidnica is bigger and definitely gets more visitors (Swidnica is also a much bigger town than Jawor). It is really hard to believe that both are Protestant churches, as they are quite lavishly decorated. When Silesia was still part of the Habsburg domains in the 17th century, the local Protestants were granted permission to build these churches as a gesture of goodwill after the carnage of the Thirty Years' War and the following Peace of Westphalia. There were some rather petty conditions attached, though, such as the prohibition to use any other building material but wood, or the requirement that the churches be built outside the city walls. Still, the locals built them within a year (another condition), with the financial help of Protestants from across Northern Europe. Quite a remarkable achievement, really, and true to their name, they function even today as symbols of reconciliation between Poland and Germany.