The 5th volume of the Acta Barberiniana, a series of the Istituto Nazionale di Studi Romani and the Università della Tuscia, is published in Viterbo. The series aims to publish and process the rich manuscript material of the Barberini dynasty of Pope Urban VIII (1623-1644), preserved in the Vatican, with a significant Central and Eastern European profile. Its founder and editor is Professor Gaetano Platania, a leading expert on early modern Holy See-Polish relations. The volume, edited by Péter Tusor and Alessandro Boccolini, presents the papers presented at the international symposium "I Barberini e l'Europa", held in December 2021 in collaboration with the Fraknói Research Group at the Istituto Nazionale di Studi Romani and online, and is the study book of the same title. Edizioni Sette Città's publication of more than 300 pages contains essays by 12 authors. The studies by Silvano Giordano, Olivier Poncet, Matteo Binasco, Giovanni Pizzorusso, Matteo Sanfilippo, the editors and others cover the foreign policy and ecclesiastical relations of the papal dynasty. Another important result and milestone of the Fraknói Research Group's active and ongoing scholarly presence in Rome, this volume of studies is available for download here for private use only. The book, which was published in Viterbo with the support of the Italian Ministero della Cultura, will be launched on 22 September 2022 at the Catholic University of Budapest.