Katharinenkirche (St. Catherine's Church) was an important mediaeval church, destroyed during the Second World War and preserved as a ruin.
St. Catherine's was the church of a former Dominican convent, in the Diocese of Bamberg, famous for its Medieval Library. It was founded in 1295 by Konrad von Neumarkt and his wife Adelheid, patricians of the Pfinzig family. In the Middle Ages it had an important medieval library. After the Reformation, it became a Lutheran church. The convent was closed in 1596 after the last inhabitant died.
The church was associated with the Meistersingers who met there from 1620 to 1778, and is featured in the opening scene of Richard Wagner's opera Die Meistersinger von Nürnberg.
Although destroyed by air raids in 1945, it was partially restored (1970–71) and is used for events such as open-air concerts.
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.