la Haute Ville (the Upper city), on the site of a citadel, is located on the promontory overlooking the Mediterranean Sea. The citadel was built in the 9th century with the foundation of the city. The Citadel has been reconstructed and renovated many times since its construction and most recently was an administrative center for the French Foreign Legion. Today it is more of a museum. Historically most of the inhabitants have resided in the Haute ville under the immediate protection of the citadel. The harbour facilities and residential areas below, la marine, line the narrow shelf of the inlet and extend for some distance up the valley, giving the settlement a linear appearance and creating a third residential section limited by St. Julien on the east. The city and its fortifications also extend for some distance along the cliff-tops, which are at about elevation. The cliffs have been undercut by the ocean so that the buildings, which have been placed on the very lip of the precipice, appear to overhang it. The appearance from the sea is of a white city gleaming in the sun and suspended over the rough waters below. History Prehistoric period Bonifacio has two prehistoric sites of some importance: the ancient cave shelter of Araguina-Sennola near the village of Capello on Route N96 just north of the city and a chambered tomb of Vasculacciu further north near Figari. The first is the site of the notable Lady of Bonifacio, a female burial carbon-dated to about 6570 BC, which is either late Mesolithic or Early Neolithic, and the second belongs to the Megalithic Culture and is dated to the Middle Neolithic. The alignment of the two and the extensive use of chert from Monte Arci in Sardinia shows that the Bay of Bonifacio was a route to inland Corsica from the earliest times. Roman period The only record of southernmost Corsica in Roman times comes from the geographer Ptolemy. He reports the coordinates of Marianum Promontory and town, which, plotted on a map, turn out to be the farthest south of Corsica. After listing the peoples of the east coast he states that the Subasani (ancient Greek Soubasanoi) were "more to the south." The people do not appear subsequently and the town and promontory have not been identified, nor do any Roman roads point to it. The only official road, the Via Corsica, ran between the