Roman castra of Mariana and Aleria on the east coast and further south to Pallas, according to the Antonine Itinerary. Ptolemy places Pallas unequivocally on the east coast north of Marianum. Although unrecorded tracks and paths to the far south are possible, it is unlikely they would have carried any significant Roman traffic. Maritime traffic through the strait however was significant and it could hardly have neglected the fine harbour at Bonifacio. The most popular choice for Marianum Promontory therefore is Cape Pertusato, southernmost point of Corsica island, about east of the harbor, with Bonifacio itself as Marianum town. A second possibility would be the first century AD Roman ruins adjoining Piantarella Beach near the village of Ciappili and next to the grounds of Sperone golf course, a recreational suburb to the west of Bonifacio, but those ruins appear to represent a Roman villa and the beach though eminently suitable for recreation is of little value as a port. More likely the villa belonged to a citizen of Bonifacio as Marianum. Tuscan period Corsica was taken from the Roman Empire in 469 AD by Genseric, king of the Vandals, and recovered by the Eastern Empire in 534. The Lombards having taken it again in 725, Charlemagne cleared them out by 774 and handed the island over to the Papacy, which had been the most powerful complainant of the island's devastation by Germanics. Starting in 806 the Moors of Spain began to contend for the island and held it for a short time but in 828 the Papacy assigned its defense to the margrave of Tuscany, a powerful state of the Holy Roman Empire nominally under the Kingdom of Italy. The city in evidence today was founded as a fortress by and subsequently named after Boniface II of Tuscany in 828. He had led a naval expedition to suppress the Saracens of North Africa and returned to build an unassailable fortress and naval base from which the domains of Tuscany could be defended at the outermost frontier. Most of the citadel postdates the 9th century or is of uncertain date but Il Torrione, a round tower, was certainly part of the original citadel. Climate Bonifacio has a hot-summer Mediterranean climate (Köppen climate classification Csa). The average annual temperature in Bonifacio is . The average annual rainfall is with November as the wettest month. The temperatures are highest on average in August,