The exhibition, held in the Catholic shrine of the Blessed Virgin of the Rosary of Pompeii, sheds new light on the relationship between science and religion in the late 19th century. The exhibition tells the story of the Meteorological-Geodynamic-Volcanological Observatory that was set up at the shrine in 1890 to monitor the activity of Mount Vesuvius. In 1886, Francesco Denza (a Barnabite priest and eminent astronomer, who was the first