Featured on PDR in the collection Diagramming Dante: Michelangelo Caetani’s Maps of the Divina Commedia (1855/1872)

Ever since the publication of Dante’s Divine Comedy, scholars and artists have tried to map the Inferno’s architecture, survey Purgatory, and measure their way across the spheres of Paradise. The first cosmographer of Dante’s universe was the Florentine polymath Antonio Manetti, whose unpublished research — which mathematically concluded that hell was 3246 miles wide and 408 miles deep — inspired the woodcuts used for a landmark 1506 edition of the poem. In 1588, a young Galileo weighed in, deriving Lucifer’s height and armlength (1200 and 340 meters respectively) and suggesting that the Inferno’s vaulted ceiling was supported by the same physical principles as Brunellesci’s dome. The scholarly tradition continued for centuries, culminating with the works of Michelangelo Caetani, who designed a series of maps and…