These ancient buildings range from the Romanesque style of the Middle Ages ​ — with its typically thick walls and heavy, curved arches — ​ to the ornate and dramatic baroque of later centuries. Interestingly, inside many of these buildings can be found the Tetragrammaton, the four Hebrew letters of God’s personal name.
Šīs celtnes ir būvētas dažādos stilos, sākot ar viduslaiku romāņu stilu, kam raksturīgas biezas, masīvas sienas un pusloka arkas, un beidzot ar vēlāko laiku izteiksmīgo un krāšņo baroku.