Count Eberhard II, the last male descendant of the Sempt und Ebersberg family, and his wife Adelheit founded Geisenfeld Abbey in 1030 after their three children had died leaving no descendants.

[2] Instead of monks, as before, the Abbey was for use by nuns of the Order of Saint Benedict from noble families.

A round chapel in the late Romanesque style has survived from the original abbey.

[3] At one time Geisenfeld Abbey was one of the largest and richest convents in Bavaria.

[3] In 1131 the nuns founded a brewery near today's Schloss Herrngiersdorf to supply beer to their extensive possessions in the area.

The Abbess Helene Prunner was replaced by Barbara Snäkler from the convent of Bergen, Neuburg.

At that time there were 29 nuns and 21 lay sisters led by the abbess Amanda Donaubauer (1794–1803).

The abbey was already in financial difficulties due to the costs of war and construction.

The 54 metres (177 ft) church tower with its bulb-shaped dome is a conspicuous landmark.