Jigokudani Monkey Park- Yamanouchi, Shimotakai District, Nagano Prefecture.

Pure magic. At each corner I thought this is as close as we will be, and then we were closer. One of the best parts is that any fences are there only to keep the humans in line. The macaques cruise around, have a cheeky dip in the onsen then bound back over the fence higher into the mountains.