Hire a car and drive the 45km coast road south from Alghero to Bosa.
Around every curve in the road there is a sandy cove or rocky inlet, blue-green water, cliffs and mountains.
It's hard to make any sort of progress along the road, as the water is just too inviting and the clifftop photo opportunities too many.
Bosa itself is an unspoilt town, overlooked by most tourists in favour of the nearby marina and beach. A ruined castle perches on top of a hill, from which cobbled streets and quiet squares tumble down to the river, lined with huge palms and elegant mansions.
Take the SP105 from Alghero.
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