Monastery Stift zum Heiligengrabe

The Stift zum Heiligengrabe monastery is a convent founded at the end of the 13th century, originally inhabited by Cistercian nuns, located in Heiligengrabe in the Brandenburg district of Ostprignitz-Ruppin. The monastery complex is considered the best preserved in Brandenburg and has been classified as a national monument of significance since 1998.
The monastery was founded in 1287 by Margrave Otto IV and was occupied two years later at his instigation by twelve nuns from the Cistercian convent of Neuendorf. The existence of a Holy Grave was mentioned for the first time in 1317. There are hardly any reliably documented records from the 14th and 15th centuries. A rent book from the year 1513, available for viewing at the Brandenburg State Main Archive in Potsdam, confirms that at the beginning of the 16th century, around 180 people belonged to the monastery. This included about 70 Cistercian nuns, who were overseen by an abbess.

Wikipedia