The Head of Medusa
Peter Paul Rubens, ca. 1617-1618
In a season that has had lots of mirroring, how interesting that they have chosen a painting of Medusa, the monster destroyed by catching her own reflection in a mirror!
Perseus beheaded her and used her head as a weapon to kill the monster that was going to attack Andromeda but subsequently found it too dangerous to use and gave it up to the goddess Athena instead. She set it on her shield where it became a symbol of divine protection and a ward against evil.