The Sinis Peninsula (Sardinia) There are thousands of Nuraghi on the Island of Sardinia. The nuraghi are stone built towers where the Nurghic people settled. Some date back as far as 1500 B.C. and are a testament to the architectural prowess of Sardinia's first inhabitants. The oldest, biggest and best-known Nuraghe is Su Nuraxi, south of Oristano and north of Cagliari, but if you can't get there, don't worry, there are only a few 1000 more around the island to visit and are well sign-posted for visitors. The Sinis Peninsula is a protected marine area on the western coast of Sardinia with a diverse ecosystem. The area consists of several excellent beaches (san Giovanni di Sinis, Is Arutas), a large lagoon and ancient village ruins at Tharros near the main town of Cabras. You can find more information on the Sinis Peninsula