The most popular maple trees park in Japan is set at the foot of Mt. Misen and stretches along the river. Follow one of the hiking trails leading up to the mountain and look for deers - the climb does not take more than 2 hours and it offers wonderful views.
Wikipedia https://en.wikipedia.org/wiki/Momijidani_Park
Official website http://www.miyajima.or.jp/english/spot/spot_momiji.html
Address Japan
Coordinates 34°16'57.201" N 132°19'16.668" E