agusa (Raùsa in Sicilian) is a city in southern Italy. It is the capital of the province of Ragusa, on the island of Sicily, with around 70,000 inhabitants. It is built on a wide limestone hill between two deep valleys, Cava San Leonardo and Cava Santa Domenica. The economy of the surrounding province hinges mainly on agriculture (horticulture, olives), farming, tourism, light manufacturing and small oilfields. Together with other seven cities in the Val di Noto, it is listed among the UNESCO World Heritage Sites.