A picturesque park with deer, cute tame kind creatures. They can be fed with special food and ironed. You should definitely visit the pagoda where the Buddha is sitting. Amazing beauty. And there are many very interesting technical and engineering galleries along the way, where you need to look to broaden your horizons and get acquainted with Japanese construction technologies.
It's a wonderful place! Thousands of deer are walking freely in the park. You can feed them, pet them. It is very popular with both children and adults. In my opinion, there is no such thing anywhere else.