This is a nice Japanese garden that was built in 1695. It is a listed cultural treasure and is 87,809.41 square meters. It's not a stone garden, but, for a poetic feel, a green garden with lakes, ponds, steams, and greenery, with over 6,000 trees.
It is near the underground Komagomu station. The new entrance is at the other side of the old entrance, though. You will walk past nice shops anyway. It is nice for Autumn red-leave seasons, but not in early November (they are not yet red.
Opening 9am to 5pm, and it's 300 yen to get in. Seniors pay 150 yen. Students wearing their uniform are free of charge. A group over 20 receives 20% off. See http://www.tokyo-park.or.jp/kouen/park.cgi?id=72.
From journal Hokkaido, Sapporo, Otaru, Noboribetsu, Jouzantei