ekphrasis

(Greek: ἐκ + φράσις , “description”).  A work of  poetry of prose that offers a vivid description of a work of art combined with the writer’s imaginative, subjective response. Well known examples are John Keats’ Ode on a Grecian Urn, Rainer Maria Rilke’s Archaic Torso of Apollo, and W. H. Auden’s Musée des Beaux Arts.  Pronunciation here.