Spend a few hours in the perfectly manicured grounds of Tajima Kogen Botanical Garden. Admire the wide range of plants, see if you can spot some birds or simply relax under the trees.
You'll have to pay to enter this showcase of plants, which is located in Kami. But there's loads more to see around this area than just Tajima Kogen Botanical Garden. Hachi Highlands Ski Area, Ojiro Ski Resort and Ase Valley are also worth adding to your list.