The park itself is not very special (specially if you get there at 17:00 and there is literally nobody) but you can follow the route to the castle ruins and other temples nearby.
Nice park with some sights along the walking path, mostly dense forest which is nice and calming. Takes perhaps an hour to walk around the full park, on mostly gravel paths. There are warnings posted for bears, but we didn't see any.
The park itself does not have a lot to offer, the view of the city is also obstructed by trees. Not worth solely visiting, but ok as a break between sites on the hill. There is however a very well maintained restroom.
Part of the takayama walking trail. Very pretty with a great view at the top. Be aware that there are indeed wild animals in there. A dog walker and her dog got into the Japanese serow's territory and they got very unfriendly and was trying to chase us off the park. We also saw racoon dog but thankfully not bear.
