- "I have created a small gallery in the Villa. Monteriggioni's artists are always welcome to study them."
- ―Mario Auditore regarding the Villa's gallery, 1454.[src]
From 1476 to 1499, his nephew Ezio gathered pieces of Renaissance artwork from art merchants in several different cities during his travels, which were displayed in the villa's painting gallery. However, the paintings were either destroyed or stolen by the Borgia following the siege of Monteriggioni in 1500.
Thanks to his friendship with the artist Leonardo da Vinci, Ezio Auditore was also able to gather a large number of his works, including the Annunciation, Lady with an Ermine, and the Portrait of a Musician.
Tiber Island headquarters
Ezio once again gathered paintings, sold by art merchants throughout Rome - all of which were the works of Raphael. Additionally, portraits of primary assassination targets were displayed in the same gallery.
- Several paintings which Ezio could buy both before and after settling to Rome were historically created at a later time. For example, Antonio Allegri da Correggio was born in 1489 and painted Jupiter and Io in 1530, yet Ezio could acquire this painting as early as 1481.
- After Leonardo da Vinci's abduction, Salaì revealed to Ezio that Portrait of a Lady, one of the eight Villa paintings authored by Leonardo, wasn't actually his work, implying Salaì had sold one of his own paintings as Leonardo's as he needed money.
- Additionally, Salaì stated that two works among the eight by Leonardo were burnt during the fall of Monteriggioni (2 January 1500): Leda and Saint John the Baptist. Historically, these two works were painted between 1505 and 1516.
- After Ezio rescued Leonardo from his captors, the latter told him that he meant to repaint the Saint John lost in the Villa fire. Thus it is plausible that the two paintings historically created between 1505 and 1516 were both copies of the lost originals.