The steeple of the late Gothic Schlosskirche (Castle Church) dating from the 15th century was given a Baroque crest by Stengel in 1743. http://www.saarbruecken.de/en/tourism/saarbruecken/sights/schlosskirche_castle_church

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 be 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. https://tourismus.saarbruecken.de/en/discovering/sights/basilica_st_johann