If you want to take a relaxing ride and to meet cute horses,I would recommend to go to Shiriyazaki Cape in Aomori prefecture. It’s in the northern most east edge of Honshu island. They are called Kandachime Horse. In winter they stand against the icy sea winds bravely, but in summer they are so lazy due to hot weather.It’s so cute. Aomori prefecture is far from Tokyo(about 9 hours), but it’s worth to visit.