[2] St Peter's Abbey was founded in 696 by Saint Rupert[3] at the site of a Late Antique church stemming from the first Christianization in the area in the days of Severinus of Noricum.
[4] In 1623, Archbishop Paris Lodron founded the Benedictine University of Salzburg, which until its dissolution in 1810 was closely connected to the abbey.
While the steeple received its onion dome in 1756, the interior was often re-modelled before attaining its currently visible Rococo style between 1760 and 1782 under Abbot Beda Seeauer's direction.
The St. Mary's Chapel contains the grave of Abbot Johann von Staupitz (d. 1524), who was Martin Luther's superior; they were both Augustinian monks in Germany at the time.
Mozart's Great Mass in C minor was scheduled to premiere in the church, probably on 26 October 1783, with his wife Constanze singing first soprano.
It contains documents from the 8th to the 20th centuries, in the following series: As a result of contact with notable musicians of Salzburg, St Peter's possesses a significant collection, much of it in holograph, with works by Johann Ernst Eberlin, Anton Cajetan Adlgasser, Leopold and Wolfgang Amadeus Mozart, Joseph Haydn, Sigismund von Neukomm, Robert Führer, and Karl Santner.
[3] They include two chapels dedicated to Saint Gertrude and one Christian martyr Maximus by Archbishop Conrad of Wittelsbach in 1172 and 1178.
Mozart's sister Nannerl and the popular Fascist sculptor Josef Thorak lay buried here, among many other dignitaries.
The St. Peter Stiftskulinarium was first mentioned in an 803 deed issued by Alcuin of York, an English scholar attendant Emperor Charlemagne; it therefore claims to be the oldest restaurant in Central Europe.