The Maltese Church is a Roman Catholic Gothic church of the Knights Hospitaller in Vienna. The first church on this site is mentioned in 1217, as a commandry to care and support crusaders. The current building was built in the mid-15th century. In the 17th century it was a favoured preaching location for Abraham a Sancta Clara.
This building was rebuilt to fit contemporary taste in the Baroque era and in 1806, and the Kommendenhaus (1839) and parts of the church (1857) had stained glass added during the 19th century. The Order ran into financial trouble after the First World War and in 1933 had to sell the church and the Johanneshof, and the church was given over to other uses within a historical preservation order. It was bought back in 1960 and restored in stages in 1968, 1972 and 1983-84, finishing with a general restoration in 1998.
The church's high altarpiece was painted in 1730 by Johann Georg Schmidt.
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.