One of my favorite things about Art History is tracing the uses of mythology and classical motifs in art. For example, the myth of the Minotaur and the Labyrinth I think is illustrated wonderfully in this fresco from Pompeii.
Virgil's Aeneid was likely the point of departure for this portrayal of Laocoon and his sons.
But one of my all time favorite works of lit is the Odyssey and the tale of the Cyclops and how the monster has been portrayed has always fascinated me. Even in films like Cold Mountain and Oh Brother Where Art Thou. So I made a painting based on that myself: