The Nimbschen Monastery (Marienthron) is a former Cistercian abbey located directly south of Grimma in the Saxon district of Leipzig on the Mulde River. It existed between 1243 and 1536/42 and, after its dissolution between 1550 and 1948, belonged as a state school estate to the property of the princely school in Grimma or the St. Augustin grammar school in Grimma.