The Doge at the Basilica of La Salute Francesco Guardi (1712-1793)

The picture has something of this: architecture, building, canal, gondola, church, cathedral, river, ancient, water, turning point, group, city, people, Venetian.
Perhaps it’s a painting of a large building next to a body of water with a boat in front of it and a crowd of people on the other side of the building.