Monza's cathedral museum contains one of the best collections of religious art in Europe. It's split into two parts: the first section of the display incorporates treasures from the original Palatine Chapel founded by Lombard queen Theodolinda; the second contains masterpieces intended for the 'new' cathedral. Highlights include a unique collection of Barbarian and Carolingian art (from the 4th to the 9th centuries) and a priceless collection of Lombard gold work. Admission includes viewing the Corona Ferrea (Iron Crown) in the duomo 's chapel.