Gustavus III Attending Christmas Mass in 1783, in St Peter’s, Rome Louis Jean Desprez (1743-1804)

The picture has something of this: architecture, ancient, cave, building, sculpture, stone, column, culture, church, traditional, group, wall, people.
Perhaps it’s a painting of a large group of people in a large room with a clock tower in the background and a crowd of people standing in the middle of the room.