One thing I learned during my December trip is that you can almost always find a shrine inside a sotoportego (the covered passageways that are all over Venice) or on a street named for the Madonna (and there are many of those!).
This is one in Castello in a sotoportego off Via Garibaldi, not far from the church of San Francesco di Paola. This one's very elegant with all that gold.
Thanks so much to Maria I who told me who this is in the shrine (Mary, Queen of Peace) and translated the line under "Ave Maria":
"Regina Pacis Ora Pro Nobis" (Queen of Peace, Pray for Us)
I love our blogging community. Thanks Maria I!