The architect who designed the Kajetanerkirche (1685-1697) in the Altstadt, a baroque church for the Theatine Order built on the site of a medieval bathhouse where Paracelsus had once practised. Giovanni Gaspare Zuccalli came from the extraordinary Graubunden tradition that produced a disproportionate number of master builders for Central European courts.
His story has a bitter coda. When Johann Ernst von Thun succeeded Max Gandolph as archbishop, Thun was hostile to the "Welsch Baroque" style and to the Theatines themselves. Zuccalli spent years fighting for his final payment. The episode marks the end of Italian-Swiss architectural dominance in Salzburg. After Zuccalli, Thun turned entirely to Johann Bernhard Fischer von Erlach, and the city's baroque identity shifted from Italian to Austrian hands.