This small collection of Norman-era jewels and religious relics is accessed via the cathedral's right aisle. Most extraordinary is the fabulous 13th-century crown of Constance of Aragon (wife of Frederick II), made by local craftsmen in fine gold filigree and encrusted with gems. More bizarre treasures include the tooth and ashes of Santa Rosalia, kept here in silver reliquaries.
The treasury entrance ticket also grants access to the cathedral's crypt and Royal tombs.
