The bell of the 10th-century church of San Salvatore de Bireto tolled to announce the crowning of a new doge. The coronation ceremony was restricted to those wearing a bireto, the cloth cap that would be ceremoniously placed on the new doge's head, and someday worn attending his burial in the same church. The church was remodeled in 1810; the dome is beautifully tiled, and the paneled bronze doors cast in the 11th century came from Constantinople, as did the doors
in the Amalfi Duomo. Within is a 12th-century marble plaque showing two peacocks, one standing over a human head between two sirens, the other on a hare being attacked by two birds. Peacocks were considered immortal, but the symbolism of the two in this setting is open to interpretation.