OK, it has come to my attention, if you Google oldest paintings, there are some now older than the ones we're visiting. So let's say the oldest ones conventionally believed to exist for a long time. They were discovered by a group of boys in the late 1800's, I think. How's that for generally vague?
As for prizes for guessing, you get the satisfaction of knowing you were right.
A suggestion for those following us vicariously- when my parents did their extensive traveling, we had the world map up on the wall, and the kids would move the marker wherever my parents were that day. It really brought home World Geography for them. I will try to post pictures if possible.
3 days and counting...