I don't know if I've ever read any other books with so many layers as Dante's Divine Comedy! (And no, it doesn't count if you only read Inferno. The best comes later)
"In my midlife, I found myself in the middle of a dark forest" Divine Comedy, Inferno by Gustave Doré (1832-1883)
La vision des ossements desséchés – Gustave Doré (Détail, 1865) #undead #skeletons
Gustave Doré - "David & Goliath" (1866) - Illustration de la Bible, Ancien Testament, Premier Livre de Samuel 17:50.
SATAN SPEAKS WITH SIN AND DEATH: PARADISE LOST - GUSTAVE DORE
Gustave Doré is one of the best Illustrators to walk the Earth and here in his "Don Quixote de la Mancha" plate 1863, it is quite clear.
La Divine Comédie, de Dante Alighieri, illustrée par Gustave Doré (1861)
A Voyage to the Moon by Gustavo Dore
The Ice was All Around - from The Rime of the Ancient Mariner - by Gustave Dore (Jonnard, engraver)