Ochsenhausen Abbey was a Benedictine monastery was founded according a legend in the 9th century when there was a nunnery here called 'Hohenhusen', which was abandoned at the time of the Hungarian invasions in the early 10th century. A ploughing ox later turned up a chest of valuables buried by the nuns before their flight, and the monastery of Ochsenhausen was founded on that spot.
The first Abbey Church of Ochsenhausen was in fact dedicated in 1093. The monastery was initially a priory of St. Blaise's Abbey in the Black Forest, but gained the status of an independent abbey in 1391. In 1495 it became Reichsfrei (territorially independent).
The abbey was secularised in 1803 and in 1806 its territories were absorbed into the Kingdom of Württemberg.
Much of the buildings still survive. They were extensively refurbished in the Baroque style. The Baden-Württemberg State Youth Music Academy is accommodated in part of them. The former abbey church is now the parish church of St. George's.
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.