here it is; not much bigger but definitely clearer.
http://torinodimentica.altervista.or...Seutter-th.jpg

http://torinodimentica.altervista.or...-Torino-th.jpg
and yes: turin had to pay great attention to defences because piedmont (my region, at the time a little state) is just some kilometres far away from france and austria, which ruled europe. i haven't thought to an era yet, but gunpowder is the most likely one.
about details, it depends on what people who asked me to make it want: this is just a preview.
cheers!