This beautiful photo of Piazza San Marco was taken by Bruno Rosso in 1965. It's now part of the collection of the Museum of Fine Arts in Boston. You can see a larger image here.
I love the mood of this photo. I've never experienced snow in Venice - I hope to some day. A Lover of Venice has a magical trip through Snow-covered Venice on his site (so glad that ALoV is back on line!).
Hope everyone is having a nice winter without too much extreme cold.