The palace also contains a large back garden, which is similar to that at San Anton Palace but on a smaller scale. It is the second largest Hospitaller-era garden in Malta after San Anton. A water lifting apparatus (Maltese: sienja) was installed in the gardens in the 19th century for irrigation purposes. Since 1977, most of the garden has been open to the public as Romeo Romano Gardens (Maltese: Ġnien Romeo Romano).