I came across this playground on a temple's grounds in Udon Thani... I stayed with a friend's family and it was a nice experience. I think we got a good feeling for each other despite the language barrier (I speak just very basic Thai, but they virtually no English, so it wasn't easy). Udon is a spot where many westerners and their Thai wives raise their families. It's on the way to Vientienne (capitol of Laos) from Chiang Mai, so it will most likely be visited again.