Heilsbronn Abbey was a Cistercian monastery at Heilsbronn founded in 1132–33 by Saint Otto of Bamberg. It was settled by monks from Ebrach Abbey, under the first abbot Rapotho. It was one of the wealthiest monasteries of Germany, with possessions around Franconia as far as Regensburg and in Württemberg. These rich endowments were mostly made by the dukes of Abenberg and their heirs, the Hohenzollern Burgraves of Nuremberg. It was the hereditary burial-place of the Hohenzollern family and ten burgraves of Nuremberg, five margraves and three electors of Brandenburg, besides many other persons of note, were buried here.
Heilsbronn was a flourishing monastery until the time of the Reformation. In 1530 Abbot John Schopper (1529–1540) founded a monastic school here, which later became a Protestant school for princes, and the doctrines of Luther gradually found favour in the monastery. His successor, Sebastian Wagner, openly supported Protestantism. He married and resigned in 1543. In 1549 Roman Catholicism was restored at Heilsbronn, but only ostensibly, and the abbey seems to have ceased to be a Catholic house in 1555, although it existed for some years longer. The last abbot who made any pretense to Catholic belief was Melchior Wunderer (1562–1578). The five succeeding abbots were Protestants, and in 1631 Heilsbronn ceased to be an abbey. Its valuable library was transferred to Erlangen.
The buildings of the monastery have mostly disappeared, with the exception of the fine church, known as Münster Heilsbronn, a Romanesque basilica, restored between 1851 and 1866, and possessing paintings by Albrecht Dürer.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.