A square 1024x1024 artwork depicting a solitary unicorn standing in a sun-dappled medieval garden. The unicorn is ethereal and majestic, with a pearlescent white coat and a spiraling horn. It is looking towards a distant, richly detailed tapestry hanging on a stone wall, which subtly depicts human figures and floral motifs. The garden is overgrown with wildflowers and ancient roses in deep crimson and soft blush tones. Shafts of golden sunlight stream through the leaves of ancient oak trees, casting dappled shadows and highlighting dust motes in the air. The atmosphere is one of quiet contemplation, timeless beauty, and a hint of melancholy. The color palette is rich yet muted, with earthy greens, deep burgundies, soft golds, and creamy whites, evoking an old master painting. The composition should feel intimate and slightly dreamlike, with a shallow depth of field focusing on the unicorn and the tapestry. Professional audiobook cover aesthetic.