Aquarium of Syracuse, Public aquarium in Syracuse, Italy

The Aquarium of Syracuse is a public marine facility in Sicily with tanks displaying fish and sea creatures from oceans around the world. The collection includes both exotic species and Mediterranean residents shown in tanks of varying sizes.

The aquarium opened in the early 1960s inside a gallery dug in 1676 under Spanish rule, when the viceroy of Sicily, the count of Ligni, had Ortigia's western coast fortified from Porta Marina to the Fonte Aretusa. Two batteries, forte Campana and forte Fontana, blocked the passage from the spring to the port, so a tunnel was cut through the rock. The site became a public aquarium but was only fully operational from 1996-1997; it closed in November 2018 for lack of a concession holder and the rooms are now completely empty.

The aquarium's exit opened inside the freshwater Fonte Aretusa, the spring linked to the Greek myth of Arethusa, so the visit ended at a landmark of Ortigia's identity. The tunnel itself was dug in 1676 under Spanish rule, when the Count of Ligni fortified the western coast of Ortigia.

The aquarium closed in November 2018 for lack of a concessionary operator, and its rooms are now completely empty; it cannot be visited. Its entrance stands near the Foro Italico, while the tunnel's other end opens inside the Fonte Aretusa, so the site can only be seen from outside.

The aquarium opened in the early 1960s but only became fully operational in 1996–1997, over three decades later. It shut in November 2018 for lack of a concessionary operator, and the rooms now stand completely empty. Its exit lay inside the freshwater spring of Fonte Aretusa.