In this survey of the Avignon papacy and the period of the Great Western Schism (1378–1417), Rollo-Koster sets out to ‘rehabilitate’ the Avignon papacy from a reputation that began as early as Petrarch’s criticism of Avignon as ‘the Babylon of the West.’ Although the author acknowledges the Avignon popes’ emphasis on ‘efficient productivity’ rather than spirituality, she shows that their institutional achievements, including an effective bureaucracy, a centralized fiscal system, and the development of archives and recording procedures, were innovative and provided long-term stability. She credits much of this to Pope John XXII (r. 1316–1334), ‘an administrative genius’ and the ‘architect of papal centralization’ who established the foundations on which his successors built. Rollo-Koster further challenges the view that the Avignon papacy turned its back on Rome; rather, it recognized the temporary status of its residence and sought to return to Rome, even as it transformed the village of Avignon into a cosmopolitan city and a spiritual capital. Employing her familiarity with Avignon’s archives and the streets of the city, Rollo-Koster provides English readers with a valuable introduction to a dynamic, if controversial, period in papal history. Summing Up: Highly recommended. All levels/libraries.