The Church of St. Andreas was constructed between 1622 and 1629 in the South German baroque style. It was originally a Jesuit church and also served as the court church for the Counts palatine of Neuburg. After the dissolution of the Jesuit order in August 1773 it served as a parish church until 2005 when it became the monastery church of the Dominican Order. The building itself is now owned by the city of Düsseldorf.
The church is furnished with stucco by Johannes Kuhn from Strassburg and life-size sculptures of the apostles and of saints of the Society of Jesus.
In the late 17th and early 18th centuries, the church was an important center of musical culture in Düsseldorf. The composer Johann Hugo von Wilderer served as its organist. The mausoleum, designed by Venetian architect Simone del Sarto, contains the tombs of several Electors Palatine, including that of Johann Wilhelm. The high altar of the church was destroyed during World War II. The new altar, designed by Ewald Mataré was built in 1960. Paintings by Ernst Deger can be found in the church's two side altars which are dedicated to the Virgin Mary.
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.