Torre Grande Lighthouse, Lighthouse and defensive tower in Oristano, Italy.

Torre Grande Lighthouse is a substantial defensive tower standing 16 meters tall on the Sardinian coast, now open to visitors as a museum. The structure serves a dual purpose: it preserves the region's maritime defense heritage while maintaining an active navigation light that aids vessels at sea.

Spanish military forces built this coastal defense tower in 1542 under orders from Charles V, completing the construction by 1555. It was created as part of a broader strategy to fortify Sardinia's shoreline against threats from the sea.

The building is run by the City of Oristano, which turned it into the Museum of Coastal Towers; the light itself is automated and managed by the Marina Militare under code 1394 E.F. The tower is known locally as the Gran Torre, and its two levels and 20-metre diameter make it the largest coastal defensive tower in Sardinia.

Access to the site is straightforward through Piazza della Torre in the Marina di Torre Grande area, where the tower is readily visible. The location serves as one of several coastal defense structures open to visitors along Sardinia's shoreline.

The tower's lantern sits inside a room and shows through a bay window, not on an open gallery. The light stands 18 metres above sea level, flashes red once every five seconds and reaches 8 nautical miles; the Marina Militare runs it under code 1394 E.F.