What is the significance of St Mark's square?
What is the significance of St Mark's square? Piazza San Marco (St Mark's Square) is the heart of Venice. As the largest square in the city St Mark's Square has always been the location of important government buildings and other facilities central to the goings on in Venice. For first time visitors it's the natural magnet to head for upon arriving.
Why is St. Mark the patron saint of Venice?
St. Mark protected the Venetians and therefore also their State. Saint Christopher, depicted in a fresco in a great hall of the Ducal Palace, protected sailors and the Adriatic Sea.