The Series Historic Buildings in Transylvania, launched in 1993, presents the most precious examples of Transylvanian built heritage connected to the Hungarian culture, with the purpose of drawing the general public's attention on values, heritage and our responsibilities towards these. The publications of this series are recommended especially to those who at present own or use such values, but also to those who are interested in history, architecture and the Transylvanian art.

Number 6 of the Series Historic Buildings in Transylvania presents the Unitarian Fortified Church in Aita Mare, a village belonging to the Trei Scaune Region. The ensemble is a fine example of this type of fortified church, which was popular among the Szekler population preparing for self-defence. The settlement’s first Romanesque church was mentioned in 1332, on the foundations of which the Gothic church was built in the 15^th century. The hall church with a nave and a polygonal choir was surrounded by curtain walls soon after its construction. During the 16^th century, the development of military science and firearms made it necessary to modernise the fortification, which was achieved by building Italian-type bastions.