Langendorf Monastery

The foundation of the monastery took place after a deed of donation from the year 1230. Around 1400 the still preserved monastery church was built. The Reformation was introduced in 1539, followed by multiple changes of ownership and from 1758 to 1774 a noble fräuleinstift. From 1811 used by the neighboring orphanage, conversion into an estate in 1838. The monastery church used as a tobacco barn from 1957 to 1991, today the venue. The 19th century manor on the site of the east side of the enclosure is still used today as a school building. (Source: Wikipedia)
If I hadn't known in detail myself.

The Cistercian nunnery in Langendorf existed for over 300 years. The foundation probably took place before 1220. The existence of the monastery is attested in a document from the year 1230, according to which Knut von Divorce bequeathed 6 hooves of land to the monastery with the entry of his daughter Sophie.
Little is known about the Wilhelminian period, it is assumed that it was a donation by Margrave Dietrich the Beleaguered (died 1220) or Henry the Illustrious (1227-1262). The monastery is mentioned repeatedly from 1246 in documents of the bishops of Naumburg. In 1501 some buildings were destroyed by fire, but rebuilt by 1505.
With the spreading Reformation movement in the first half of the 16th century. and the associated reorganization of the church system, there were also changes in the Langendorf monastery. The abbess was deposed and the administration was taken over by a secular head. In 1539 it was converted into an electoral chamber estate. Some nuns were able to stay, the last one died in 1559.
In 1562 the estate came to the town of Weißenfels and many buildings were demolished. The landowner Klemm had a new manor house built next to the church in 1663. In 1665, the Duchess Anna Maria von Sachsen-Weißenfels took possession of the property and temporarily lived in the so-called "Red Princely House".
In 1758 a "Noble Fräuleinstift" was set up here for 16 years. In the meantime privately owned, it was raised to the status of a manor in 1838. The manor house was built in 1876, but the base of the cross vault from the monastery was integrated into it. Only the monastery church remains from the time of the monastery.Source: gemeinde-langendorf.de/index.php/kloster.html

Langendorf monastery churchThe construction time of the monastery church is still unclear. Certainly not built at the beginning of the monastery period, it is a building from the late 13th and early 14th centuries. In accordance with the ideals of the Cistercian order, the church building is more modest, simple, without a tower and without elaborate decoration. The church is dedicated to Saint Anne.
In the transitional style from Romanesque to Gothic, the slender two-or However, the three-part pointed arch window gives the sacral building a pleasing appearance. Instead of a tower, the roof had a turret until 1876. Simplicity also characterizes the interior of the church, but the six-part cross vault under the large nuns' gallery is impressive.
The old organ was sold in 1570 and not replaced until 1663. In the course of a comprehensive renovation of the building, Gabriel Voigt had a bell cast in 1654, and Duke Christian had another in 1728.
After the front pipes of the organ had to be given up for war purposes in 1917, new ones were installed in 1922. A new bell was purchased in 1925. It consisted of a large "war memorial bell", a medium-sized "Luther bell" and a small christening bell. After 1945 the church was left to decay. With the founding of the "Förderverein Klosterkirche" in November 1998, activities were initiated with the aim of saving this building and filling it with new life.Source: gemeinde-langendorf.de/index.php/kloster.html