Unbelievably in the middle of Tokyo, and almost next to Shinjuku Station, is a beautiful wide open space. I went in Winter, but it was still gorgeous. Give yourself half a day to enjoy it with a thermos of tea or coffee.
Sites:
fng.or.jp/shinjuku/en/
www.japan-guide.com/e/e3034_0...
en.wikipedia.org/wiki/Shinjuk...
#shinjukugyoen #shinjuku #tokyo #japan