The four volumes, with numerous color photographs and drawings, contain the first complete study of Protestant church building in Early Modern Europe (16th-18th centuries). The variety of building materials and the abundance of spatial solutions show how great the innovative and entrepreneurial potential was that was released with the spread and stabilization of the Reformation. It broke with the autocracy of the Southern and Western countries, which imposed their cultural patterns on the rest of Europe. The Northern and Eastern Central European countries have since been equally involved in creating new values. Their architectural heritage, still too little known, occupies a worthy place here.