Medieval Transylvania and the Fortified Saxon Churches

Transylvania is situated in central Romania, being surrounded by the Carpathian Mountains; here peasants and merchants, who lived between century. XIX-XX, founded seven main medieval fortresses: Brasov, Sibiu, Sighisoara, Cluj, Bistrita, Sebes and Medias.
The outer walls, towers, bastions, bridges, stairs, narrow streets, squares, civil and public buildings, churches were built to protect the inhabitants of the city, against the repeated sieges of Tatars and Turks in the Middle Ages.
As an effective way of defense, that we find in the villages and fortresses it is the fortification of churches, architectural formula that is now considered to be unique in Europe.