The Sfântu Gheorghe Fortress is a complex of historic buildings. At its center is the late-Gothic Fortified Reformed Church from the 15th century. Its architectural style was probably finalized in 1547, when its patron, Pál Daczó, had it rebuilt at his own expense. Originally, the church, renovated between 2018 and 2021, was surrounded by two rings of fortifications with two defensive towers and served as a refuge during Tatar attacks.
The outer wall was demolished by the community in 1786, and its stones were used—by order of Emperor Joseph II—to build the German School building, located next to the bell tower and now serving as the cantor's residence and a prayer hall.
The wall facing the cemetery is lined with carved wooden gravestones. These seventy-odd gravestones are intended to commemorate the deceased students and teachers of the Mikó Székler College (Székely Mikó Kollégium).
Beside them is a funeral chapel and the remaining inner enclosure wall with the bell tower.