Marienmünster is well known for the former Marienmünster Abbey Church with its organ, which is well worth seeing and hearing. Marienmünster Abbey is a former Benedictine monastery, dissolved in 1803. Founded in 1127, the monastery reached its peak in the 12th and 13th centuries. During the Thirty Years' War, the monastery and the church were badly damaged and had to be rebuilt from 1661 onwards. From 1965 to 2014, Passionists lived there and pastored the surrounding parishes.
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.