[1] In 1683, the bishop Ignacio de la Cerda decided to build a large new palace overlooking the Piazza del Duomo that closed the space between the cathedral and the palazzo de' Nardis, so that the entire urban core of the episcope — including the oratory of Santa Maria della Pietà of the confraternity of the same name — found itself obscured from public view.

[3] The current forms of the Archbishop's Palace are to be referred to the reconstruction carried out from 1859 by the bishop, and architect, Luigi Filippi, who revolutionised the entire complex; during this phase, to replace the previous chapel, the oratory of San Luigi Gonzaga (L'Aquila)] was also built, located in the courtyard of the episcope and from that moment on dedicated exclusively to seminarians.

[3] The main façade, in the style of Neo-Renaissance architecture, faces directly onto the square, squeezed between that of Palazzo de' Nardis, on the left, and the cathedral, on the right.

The portal, quadrangular in shape, is not centred on the façade but located adjacent to the cathedral, in correspondence with the street inside the Archbishopric and closed in the 17th century with the building of the palace.

[3] Inside there is the entrance to the palace and, at the front, the oratory of San Luigi Gonzaga with paintings by Giulio Cesare Bedeschini, Pompeo Cesura and Bernardino Monaldi.