Information seems to be hard to come by on this country in general and city in particular. When you do get there, make the most of your historical/cannon related side trips. Mike and I try to take 5 shots of each cannon that we find. I think cannonman does the same. We start at the breech and get a breech face shot, a top view shot, a right trunnion shot, a muzzle shot and a left trunnion shot. Just a suggestion, but a few extra photos won't cost any more and sometimes reveal details that you will only notice later. Sure sounds like a great trip!!
Regards,
Tracy and Mike