This is a detail of the famous mosaic of the Portal Sant’Alipio on the church of San Marco in Venice. The group of ladies are witnessing the most important event in Venice’s history: the arrival of the body of the evangelist St Mark to the city, where he’s carried into the church. Of course, it’s not history, but it was certainly meant to have been. It’s the only surviving one of the 13th century mosaics that used to decorate all five of St Mark’s portals.