Monreale is a town and in the province of Palermo, in Sicily, Italy. It sits on the slope of Monte Caputo, overlooking the very fertile valley called "La Conca d'oro" (the Golden Shell), famed for its orange, olive and almond trees. The town, which has a population of approximately 30,000, is about 15 kilometres south of Palermo. Monreale forms its own archdiocese and is renowned for its Norman-Byzantine cathedral which is a UNESCO World Heritage Site as part of a group of nine inscribed as Arab-Norman Palermo and the Cathedral Churches of Cefalù and Monreale.
The cathedral in Monreale, Palermo, is regarded as the most beautiful of the Norman churches in Sicily. The mosaics were made with 2200 kg of pure gold, experts have estimated. Craftsmen from Constantinople were employed to expedite the work. The Byzantine mosaics are among the most magnificent in the world.