The ecclesiastic and defense complex was built in 15th-16th centuries in the late Gothic style, with specific Renaissance elements. For 300 years Biertan was chosen as the residence of the Evangelic Diocese (1572-1867). The main edifice of the ensemble is a hall-church with three naves, with arches disposed in a network, built between 1492 - 1516 on the place of another old church, in the late Gothic style, with elements from the Renaissance architecture at some portals.

Inside the church the late Gothic shrine, in the form of a triptych was realized in more stages between 1515-1524. The pews are made between 1514-1523 by Reychmut from Sighisoara and are ones of the most valuable pews of this kind from Transylvania. Unique in its way the door of the vestry built in 1515, is remarkable for its blocking system. As a result of the earthquake in 1977, restoration and consolidation works of the arches were done.
This historic monument, an architectural masterpiece, is illustrative for the entire area, which was colonized by the Saxons of Transylvania.
Out of a total of almost 300 fortified churches built between the 15th and 16th centuries, the church from Biertan preserved very well its previous aspect. This edifice is placed high on a hillock right in the center of the village, in the center of the transverse valleys boarded by vineyards, maize cultures and forests.
The Church, hall type, with three naves, from the period of late Gothic was built in 1500-1516, the chancel of the pre-existent edifice being heightened with a fortified level. The inner wall, from the same period, was fortified during the 16th century with 8 towers, being unfolded in a spiral form, like a three-towered belt around the hill.
Another church occupied the same place before. It can still be observed the frescos from the beginning of the 16th century on the Southern tower of the inner wall as well as the tombstones of the Saxon bishops in the Mausoleum tower.