Palermo pälĕrˈmō [key], Lat. Panormus, city (1991 pop. 698,556), capital of Palermo prov. and of Sicily, NW Sicily, Italy, on the Tyrrhenian Sea. Situated on the edge of the Conca d'Oro (Golden Conch Shell), a beautiful and fertile plain, it is Sicily's largest city and chief seaport. Manufactures include textiles, food products, chemicals, printed materials, and cement. There are also shipyards in the city.

An ancient Phoenician community founded between the 8th and 6th cent. b.c., it later became a Carthaginian military base and was conquered by the Romans in 254 b.c.–253 b.c. Palermo was under Byzantine rule from a.d. 535 to a.d. 831, when it fell to the Arabs, who held it until 1072. The city's prosperity dates from the Arab domination and continued when, under the Normans, it served (1072–1194) as the capital of the kingdom of Sicily. Under King Roger II (1130–54) and later under Emperor Frederick II (1220–50), Palermo attained its main artistic, cultural, and commercial flowering. The French Angevin dynasty transferred the capital to Naples; its misrule led to the Sicilian Vespers insurrection (1282), which began in Palermo.

The city is rich in works of art; Byzantine, Arab, and Norman influence are blended in many buildings. Points of interest include the Arab-Norman Palatine Chapel (1130–40), located in the large palace of the Normans (today also the seat of the Sicilian parliament); the cathedral (founded in the late 12th cent.), which contains the tombs of Frederick II and other rulers; the Church of St. John of the Hermits (1132); the Palazzo Abbatellis (15th cent.), which houses the National Gallery of Sicily; the Gothic Palazzo Chiaramonte (1307); the Capuchin catacombs; and, among more modern structures, the Sports Palace (1998). The city has a university.

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