It is small, a little more than eight square miles.
Steep hills divide the island into several valleys, usually open on one side to the sea.
Each valley is distinctive, with unique variations of topography, flora , density of settlement, and character of architecture. This creates the illusion of being in a much larger place. The shoreline includes fourteen beaches of various sizes, all covered with gleaming white sand. Several offshore areas are included in a Marine Reserve . There is one town, and a dozen villages, distributed more or less evenly over the landscape.