The corno ducale (Italian for 'ducal horn'), a unique ducal hat, was the headgear and symbol of the Doge of Venice. It was a stiff horn-like bonnet, which was made of gemmed brocade or cloth-of-gold and worn over a camauro. The ducal horn was a fine linen cap with a structured peak at the back reminiscent of the Phrygian cap, a classical symbol of liberty.
Every Easter Monday, the doge headed a procession from St. Mark's basilica to the convent of San Zaccaria, where the abbess presented him with a new camauro crafted by the nuns.