Capo San Marco

Capo San Marco is a limestone promontory at the southwestern tip of the Sinis Peninsula that drops sharply into the sea. A 1924 lighthouse with an ochre-colored tower stands at its southern end, and the eastern shore features natural coves and rocky formations.

The promontory lay beside the ancient Phoenician city of Tharros, which remained inhabited until the 11th century. Its position provided natural protection for this early coastal settlement.

The lighthouse serves as a landmark that shapes how people experience this stretch of coastline today. It marks an important point in the landscape that residents and visitors naturally orient themselves toward.

Access is via a walking path from San Giovanni di Sinis village, where parking is available nearby. Wear sturdy shoes and bring water, as the terrain is exposed and sunny.

The waters offshore contain extensive beds of Posidonia oceanica seagrass, which serve as crucial habitat for fish and other marine life. This underwater vegetation is central to the health of the Mediterranean ecosystem here.