These two views are both taken from Portici in the outskirts of Naples, but one is towards the west and shows Naples in the distance and the other is towards the east and shows Mount Vesuvius in the background. In the first view, taken from the Palazzo Reale and more precisely from the Villa Sarlo, shows on the left the small Fortino del Granatello (built in in 1739 by the Spanish architect Lopez Barrios to defend the Palazzo Reale, it is no longer extant), and on the right, King Fedinand IV's Porto Nuovo and part of Prince d'Elboeuf's villa (by the date of this work the property of the king, where the royal nursery was located). The watercolor encompasses the entire shoreline of the Bay of Naples, including the palace of Capodimonte, the old city, Castel Sant' Elmo and Castel dell'Ovo. In background on the left are Capo Miseno and the island of Ischia. The second view is taken from the Fortino del Granatello and shows at the left beyond a little cemetery (which also appears in the first view) the Palazzo Reale built in 1738 for King Charles III of Bourbon. The gates leading to the palace and the Villa Sarlo adjacent to it are no longer extant.
Both views are based on works by Giovanni Battista Lusieri (1754-1821) , The bay of Naples from Portici of 1783 formerly in the Elgin collection (Weston-Lewis, op. cit., no. 16), and The Palazzo Reale of Portici of 1784 in an Italian private collection (op. cit., fig. 10; F. Spirito, Lusieri, Naples, 2003, no. 18). Della Gatta's works are however taken from slightly different viewpoints and differ in many details. For example, while a young couple with a dog is represented in the foreground in both views of the Palazzo Reale, Lusieri chose to represent aristocratic figures, della Gatta peasants in traditional costume. Della Gatta also accentuates the effects of perspective and depth, giving more importance to the landscape.