Saint Vergilius of Salzburg constructed the first cathedral possibly using the foundations of St. Rupert.
The first Dom was recorded in 774.
The so-called Virgil Dom was built from 767 to 774 and was 66 metres long and 33 metres wide.

Archbishop Arno (785 – 821) arranged the first renovations of the Dom, less than 70 years after its completion.
In 842, the building burned after a lightning strike.
Three years later, work began to rebuild the structure.

Under Archbishop Hartwig, the sanctuary expanded to the west with addition of a choir and crypt between 1000 and 1080.
Archbishop Konrad I added the west towers from 1106 to 1147.

This original church, thus experienced at least three extensive building and rebuilding campaigns during the early Middle Ages, the final result of which was a somewhat ad hoc Romanesque basilica.
In 1598, the basilica was severely damaged, and after several failed attempts at restoration and reconstruction, Prince-Bishop Wolf Dietrich Raitenau (Archbishop from 1587–1612) finally ordered it demolished.
Wolf Dietrich was a patron and supporter of modern Italian Baroque architecture, having seen it from its origins in Italy and particularly Rome.
Indeed, it was Wolf Dietrich who was also responsible for the building of the nearby Alten Residenz, which is today connected to the cathedral.

Wolf Dietrich hired the Italian architect Vincenzo Scamozzi to prepare a plan for a comprehensive new Baroque building.
Construction did not begin however until Wolf Dietrich's successor, Markus Sittich von Hohenems (Archbishop from 1612–19), in 1614 laid the cornerstone of the new cathedral.
Santino Solari designed the current cathedral by dramatically altering the original Scamozzi plan.
 The new sanctuary was completed 1628, less than 15 years after construction began.
At its consecration on September 24, 1628, 12 choirs positioned in the marble galleries of the cathedral sang a Te Deum (the score of which is since lost) composed by Stefano Bernardi, the Kapellmeister to the Salzburg court.
The present Salzburg Cathedral is built partially upon the foundations of the old basilica.
Indeed, the foundation stones of the preceding church building may be seen in the Domgrabungen, an excavation site under the cathedral that also features mosaics and other artifacts found when this location was the forum of the Roman city Juvavum.
One other surviving relic that predates the baroque edifice is the 14th Century Gothic baptismal font.
The relics of Saint Rupert were transferred here when the cathedral was completed.

The finished church is 142 meters long and 33 meters high at the crossing/dome.
The baroque style of St. Rupert's can be seen in the choir and the nave.

The Salzburg Cathedral was damaged in 1944 during World War II when a single bomb crashed through the central dome over the crossing.
Repairs were somewhat slow to take place, but restoration was complete by 1959.

Wolfgang Amadeus Mozart was baptized here on January 28, 1756, the day after his birth.
Saint Vergilius of Salzburg constructed the first cathedral possibly using the foundations of St. Rupert. The first Dom was recorded in 774. The so-called Virgil Dom was built from 767 to 774 and was 66 metres long and 33 metres wide.
Archbishop Arno (785 – 821) arranged the first renovations of the Dom, less than 70 years after its completion. In 842, the building burned after a lightning strike. Three years later, work began to rebuild the structure.
Under Archbishop Hartwig, the sanctuary expanded to the west with addition of a choir and crypt between 1000 and 1080. Archbishop Konrad I added the west towers from 1106 to 1147.
This original church, thus experienced at least three extensive building and rebuilding campaigns during the early Middle Ages, the final result of which was a somewhat ad hoc Romanesque basilica. In 1598, the basilica was severely damaged, and after several failed attempts at restoration and reconstruction, Prince-Bishop Wolf Dietrich Raitenau (Archbishop from 1587–1612) finally ordered it demolished. Wolf Dietrich was a patron and supporter of modern Italian Baroque architecture, having seen it from its origins in Italy and particularly Rome. Indeed, it was Wolf Dietrich who was also responsible for the building of the nearby Alten Residenz, which is today connected to the cathedral.
Wolf Dietrich hired the Italian architect Vincenzo Scamozzi to prepare a plan for a comprehensive new Baroque building. Construction did not begin however until Wolf Dietrich's successor, Markus Sittich von Hohenems (Archbishop from 1612–19), in 1614 laid the cornerstone of the new cathedral. Santino Solari designed the current cathedral by dramatically altering the original Scamozzi plan.  The new sanctuary was completed 1628, less than 15 years after construction began. At its consecration on September 24, 1628, 12 choirs positioned in the marble galleries of the cathedral sang a Te Deum (the score of which is since lost) composed by Stefano Bernardi, the Kapellmeister to the Salzburg court. The present Salzburg Cathedral is built partially upon the foundations of the old basilica. Indeed, the foundation stones of the preceding church building may be seen in the Domgrabungen, an excavation site under the cathedral that also features mosaics and other artifacts found when this location was the forum of the Roman city Juvavum. One other surviving relic that predates the baroque edifice is the 14th Century Gothic baptismal font. The relics of Saint Rupert were transferred here when the cathedral was completed.
The finished church is 142 meters long and 33 meters high at the crossing/dome. The baroque style of St. Rupert's can be seen in the choir and the nave.
The Salzburg Cathedral was damaged in 1944 during World War II when a single bomb crashed through the central dome over the crossing. Repairs were somewhat slow to take place, but restoration was complete by 1959.
Wolfgang Amadeus Mozart was baptized here on January 28, 1756, the day after his birth.
Salzburg Cathedral