Saint Mark's Square, the only really open space in Venice, during Carnival time: we can tell from the masks.
There is a little bit of everything: from charlatans (or politicians?) on high platforms, to two open theatre stages.
We can recognize some Harlequin and a Doctor on the right stage and two(!) women on the left stage with a guitarist that plays.
And a Puppet Show just on the left of this stage, and people going around to fix new areas. A microcosm: XIX century coming up.