Get your fix of vitamin D at Cala Sapone. Once you've worked on your tan, stick around and watch the sky transform with colors as the sun fades away.
To explore this stretch of coastline, make your way to Sant'Antioco Island. You'll find loads of other things to see and do in this area, like Maladroxia Beach, Spiaggia Grande, and Former Capo Sperone Signal Station.