The cycle of frescoes in the seven cupola vaults was created by Bartolomeo Altomonte (1694-1783). The painter was 80 years old when he undertook the work and completed it in the summer months of the years 1775 and 1776. The basic theme of the seven-part cycle of pictures is the close relationship of religion with the arts and sciences. The theme of revelation as the basis of the Christian religion is placed undisputed in the central cupola.
The personification of Divine Wisdom is enthroned in the centre of this picture. On her left is Moses as the representative of the Old Testament and on her right is a female figure wearing a tiara, a personification of the Church as the representative of the New Testament. Below this – so to speak the foundation of Christan doctrine – are shown the four Latin Church Fathers.
The neighbouring cupolas to the North and South contain portrayals of the various arts and sciences, which will be described here briefly, together with their central themes. The first picture by the South entrance to the library is devoted to the theme of the arts and technology. Apollo is shown in the centre as the god of poetry and of light enthroned over the nine Muses. Sculpture, music and painting are portrayed as allegorical female figures.