Take a tour of St Mark's Campanile in Venice, Italy - part of the World s Greatest Attractions travel video series by GeoBeats. St. Mark's Campanile stands a towering 323 feet, far above the rest of Venice. This iconic bell tower is a city treasure as well as a famous landmark. It is a separate structure from the nearby St. Mark's Basilica, though it is associated with it. The weather vane at the peak is crafted in the shape of the archangel Gabriel.