Here is a different angle on that lovely Mosque in Kazan and it's fancy fence, and below it is a diaroma of the seige of Kazan that's somewhere in a museum in St. Petersburg.
When I was in grade school, I made a diaroma of the "Battle at Trenton Bridge" in Trenton, New Jersey. I included a couple of dead soldiers floating in the water and was very pleased with myself. I think the battle was a critical battle in the American Revolutionary War
"The seige of Kazan"