6001170 Interior of the Palazzo Pubblico, Siena, Italy, with Spinello Aretino\'s fresco Pope Alexander III Returns to Rome on the wall in the background (litho) by English School, (19th century); Private Collection; (add.info.: Interior of the Palazzo Pubblico, Siena, Italy, with Spinello Aretino\'s fresco Pope Alexander III Returns to Rome on the wall in the background. Illustration from Les Arts au Moyen Age, by du Sommerard, (Paris, c1840).); by Look and Learn.