The Cathedral of Cefalù is a Roman Catholic basilica in Cefalù, Sicily. It is one of nine structures included in the UNESCO World Heritage Site known as Arab-Norman Palermo and the Cathedral Churches of Cefalù and Monreale.

Monreale Cathedral is a Catholic church in Monreale, Metropolitan City of Palermo, Sicily, southern Italy. One of the greatest existent examples of Norman architecture, it was begun in 1174 by William II of Sicily. In 1182 the church, dedicated to the Nativity of the Virgin Mary, was, by a bull of Pope Lucius III, elevated to the rank of a metropolitan cathedral as the seat of the diocese of Monreale, which was elevated to the Archdiocese of Monreale in 1183. Since 2015 it has been part of the Arab-Norman Palermo and the Cathedral Churches of Cefalù and Monreale UNESCO World Heritage Site.