Located 110 km southwest of Sicily and 65 km northeast of Tunisia and with an area of 82 km² Pantelleria is the largest volcanic satellite island of Sicily. Known for its central position in the Mediterranean Sea, an intermediate port of call between Africa and Sicily, Pantelleria is characterised by the uniqueness of its landscape, in which natural elements (blocky lava flows, creeks and stacks) are complemented by man-made constructions: the dry stone walls, which contain the land, demarcate properties and protect against the wind; the particular Pantesco gardens, almost always cylindrical constructions in dry lava stone masonry that protect the citrus fruits from the wind and control the micro-climatic effects to ensure the right amount of water for the plant, since the island naturally lacks it; the dammusi, rural buildings with thick dry-stone walls, cubic, white domed roofs and round-arched openings, atavistic examples of bio-climatic architecture, now converted into even luxury dwellings. Giorgio Armani and Madonna are among the celebrities who own dammusi on the island.