The gallery of the Popes, which leads to the deconsecrated chapel used by Cardinal Alemanno Salviati, reveals an interesting play of perspectives by looking at the ovals placed between the walls and ceilings of the gallery.
These six ovals surrounded by impressive plaster decorations have a pronounced roundness. Thanks to this particular feature, the six mythological figures contained in them change according to where they are observed.
These six figures are: Jupiter, Venus, Pluto, Diana, Apollo and Mercury.
In front of the chapel it is possible to admire two paintings depicting two important characters, Pope Sisto IV, the one who worked for the recovery of the decorations and frescoes of the Sistine Chapel (hence the name) and Pope Clement XI, belonging to the Albani family, the whose descendants still live in the Province of Pesaro and Urbino.