Its form was inspired by the late Italian Renaissance style (Trinità dei Monti in particular), with Baroque elements dominating the interior and exterior decorative features.

The four detached side spires were kept, but the large central dome was eliminated and replaced with a system of four semicircular sections, separated by transverse arches.

[4] Standing in the centre of the Metropolitan Complex, the Great Cathedral is a monumental building of a rectangular plan with four detached towers at its corners that originally flanked an immense dome.

The eastern façade has a central motif formed of six Corinthian columns erected on a stone socle, which support the architrave, above which is a high bas-relief of the Presentation of the Lord.

The western façade has eight columns separated by the entrance, above which there is a recessed balcony whose vault has a curved mosaic also showing the Presentation; above that is a stone carving of Saint George.

The four Biblical scenes above the central nave, the saints' faces and the decorative compositions all show an Italian neo-classical rigor, to which the artist had been exposed during his studies at Rome's Accademia di San Luca.