St Marco's Piazza is the main public square of Venice, Italy, and is the only Piazza in Venice. The main attractions of the piazza is the St. Mark’s Basilica, the Doge’s Palace, the Museo Correr and the Campanile (the Basilica’s bell tower). St. Mark’s Basilica was partially under restoration when I visited though. It's also a crowded place with lots of visitors (and pigeons!).