Palermo Central Cathedral Cathedral This religious complex is a collection of different architectural styles from different periods, reflecting the architectural style of Palermo. Visitors can see Gothic double spires and arches, Catalan-style porches and columns, and mosque-style geometric patterns, all perfectly Blended together. Inside is a Norman-style semi-circular hall, the cemetery of the Norman royal family. The underground treasures show a wide variety of jewellery, all belonging to Queen Costa of Aragon.