UPON THIS ROCK: MARVELS OF THE VATICAN is a book that even Pope Francis collected for his library. The book offers a groundbreaking perspective that narrates the history of Christianity through a unique collection of stamps and postal items. It also reveals pivotal events, figures, and artworks, many of which have never been publicly displayed. Curated over 20 years, it spans nearly two centuries and highlights the Vatican City’s role in global Christianity. The book covers the history from Saint Peter to the Papal States and explores Vatican architectural treasures like St. Peter’s Basilica and the Apostolic Palace. Each image is accompanied by detailed research from journals, photographs, interviews, books, newspapers, and other reliable sources, providing an insightful journey through history and art.