Ahh... St. Mark's square! Needless to say, it's beautiful. But I'd beware. . . it is the lowest ground in Venice so it's the 1st to flood when the high tides rise.
Fun fact* - Do you like shopping??? The archway near the San Marco museum leads to lots of amazing stores. Make sure to do some shopping behind the San Marco square when you visit:)
The Romanesque carvings, marble decorations and beautiful archways make the Piazzza San Marco a place you simply have to love!