Discover Castelsardo, a beautiful medieval town perched on a hilltop above the Mediterranean on this 5-hour excursion. En route to Castelsardo, we'll stop at Elephant Rock for a photo opportunity. The wind and elements have sculpted this large rock formation into the shape of an elephant's head. It is also believed to have been a prehistoric burial ground. The Doria clan of Genoa founded this fortified town in the 12th century. Today, Castelsardo is a prime tourist destination and center for Sardinian crafts. Explore the town on a guided walking tour that travels from the castle, to the 16th century cathedral, a exquisite example of Baroque design. You'll have time afterwards to shop for souvenirs, such as traditional Sardinian baskets.