The Basilica St. Johann was erected by Stengel between 1754 and 1758. It has been painstakingly renovated and is now a perfect example of 18th century Baroque beauty: the pope even granted the church the title “Basilica Minor”. Not to be missed are the bronze portal and the entrance area, which were designed by the Saarbrücken artist Ernst Alt.
The church organ is particularly striking. It consists of three individual parts, the main organ and the two choir organs. They can by played individually or together. The St. Johann Basilica organ is hence composed of 60 sounding stops and a total of 4,312 pipes. This remarkable and multifaceted instrument is exceptional in both its construction and its tone spectrum and is renowned far beyond Saarbrücken and the Saarland.
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.