I was at St.Mark's Basilica just a few days ago (I live in Venice). An informed archeologist pointed to a specific stone decoration on the north facade, telling

I was at St.Mark's Basilica just a few days ago (I live in Venice). An informed archeologist pointed to a specific stone decoration on the north facade, telling me that it was depicting Alexander the Great, and this was confirmed only by very recent studies in Alexandria (where she was going to go back the following week).