Prejmer is the largest and best preserved fortified church in South East Europe and the eastern-most settlement of Transylvanian Saxons. The church was built by the Teutonic knights between 1212 and 1213. The very high and powerful surrounding walls (12 m high, 5 m tick) were built later in the 15th cen. and host 1 room for each village family who shelter here in case of attack. During almost 500 years of various invasions, the citadel was besieged more than 50 times but conquered only once, in 1611.