Palermo is the capital of the Italian island of Sicily. The 12th-century Palermo Cathedral houses royal tombs, while the huge neoclassical Teatro Massimo is known for opera performances. Also in the center are the Palazzo dei Normanni, a royal palace started in the 9th century, and the Cappella Palatina, with Byzantine mosaics. Busy markets include the central Ballaṛ street market and the Vucciria, near the port.