San Marco is one of the six sestieri of Venice, lying in the heart of the city as the main place of Venice. San Marco also includes the island of San Giorgio Maggiore. Although the district includes Saint Mark's Square, that was never administered as part of the sestiere.OverviewThe small district includes many of Venice's most famous sights, including St Mark's Square, Saint Mark's Basilica, the Doge's Palace, Harry's Bar, the Palazzo Dandolo, San Moisè, the La Fenice theatre, the Palazzo Grassi and the churches of San Beneto, San Fantin, Santa Maria del Giglio, San Maurizio, San Moisè, Santo Stefano, San Salvador, San Zulian and San Samuele.