It was established in the Treaty of Westphalia that the Lutherans would be allowed to found three Protestant churches, the so-called Peace Churches, in the Catholic part of Silesia. They were built in Jawor, Świdnica and Głogów. The churches had to be built outside the city walls; they also could not have a bell tower and the building materials were limited to wood, straw and clay. Nevertheless, the Peace Churches became important Lutherans centres in the midst of an area threatened with re-catholicization. Due to their sophisticated architecture, they were able to receive several thousand believers. The bell tower was added in the beginning of the 18th century. The Church of Peace in Jawor shown here has been on the UNESCO world heritage list since 2001.
Above: exterior of the Church of Peace in Jawor, colour photograph, 2011; photographer: Waldemar Sieńko; source: Wikimedia Commons, http://commons.wikimedia.org/wiki/File:Jawor_Ko%C5%9Bci%C3%B3%C5%82_Pokoju.jpg?uselang=de, Namensnennung-Weitergabe unter gleichen Bedingungen 3.0 Polen.
Below: Interior of the Church of Peace in Jawor, colour photograph, 2005; photographer: Adam Kumiszcza; source: Wikimedia Commons, http://commons.wikimedia.org/wiki/File:Jawor3.jpg?uselang=de, Namensnennung 3.0 Unported.