Piazza San Marco is the square between the Doge's Palace and the San Marco bell tower in Venice.

The graceful bell tower of St. Marco cathedral, built in the XIIth-XIVth Centuries, consists of a square brick column topped with a belfry made of white stone and an abrupt tetrahedral roof, decorated with gold stars on a dark blue background.

The greatness and genuine beauty of the architecture of San Marco bell tower was the reason for giving the Bolzano Villetri™ Campanile acoustic system the name of Piazzetta.