This fascinating work by Fritz Saxl analyses the horoscope frescoed in 1511 by Baldassarre Peruzzi on the Sala di Galatea vault of the Villa Farnesina, giving an interpretation of the events predicted to Agostino Chigi. Table of contents: Preface Part 1 by Fritz Saxl The celestial buildings before the Farnesina The astronomical interpretation of the vault's single paintings What did the astrologists predict to Chigi? Classical antiquity in the frescoes of the Farnesina Astrology and Christianity in the Renaissance faith Part 2 by Arthur Beer The astronomical meaning and the date of the paintings of the Sala di Galatea vault