An important volume available in Italian and in English, produced in co-edition with 24 ORE Culture, that through long and complex archival research retraces the participation of the Holy See in the Universal Expositions, from the GreatExhibition of London in 1851 up to the Milan Expo in 2015.

Each chapter is a historical period: the industrial revolution of the late 1800s and the social and political cultures of the twentieth century; the confrontation with Modernity and the focus on the United States of America.

The Pontifical State takes part with its "Vatican Pavilion", each time promoting themes and objectives that change with history but above all with the succession of popes, while remaining steadfast in its own identity and spiritual tradition. From the survey, there always emerges the wish to enter into dialogue with progress and with the many cultural realities that participate over the course of the years. Of particular interest in the description of the layouts: the display of works of art, including the Pieta of St. Peter's, transferred to New York; the reconstruction of the tomb of St. Peter and original constructions of churches and chapels inside the Expo.

The photographic accompaniment consists of numerous historical images, views and floor maps of the pavilions.