The Cathedral of Monreale near Palermo, Sicily, is one of the world’s greatest examples of Norman architecture, and is especially famous for the dazzling Byzantine mosaics guarded inside. It is part of the Unesco World Heritage site known as “Arab-Norman Palermo and the Cathedral Churches of Cefalú and Monreale,” inscribed in 2015.

The Cathedral is part of a larger monumental complex that also includes a Benedictine convent and the Royal Palace; it was built under the reign of King of Sicily William II between 1172 and 1183. The facade of the Cathedral is inserted between two massive bell towers.