Bergamo Cathedral is a Roman Catholic cathedral in Bergamo, Italy, dedicated to Saint Alexander of Bergamo, patron saint of the city. It is the seat of the Bishop of Bergamo.
In the apse is a Martyrdom of Bishop Saint John of Bergamo (1731-1743) by Giovanni Battista Tiepolo and a Saint Alexander by Carlo Innocenzo Carloni. The main altar was designed by Filippo Juvarra.
From Wikipedia