Time Out says
Koishikawa Korakuen was first laid out in 1629. It’s now only a quarter of its original size, but it’s still beautiful, with a range of walks, bridges, hills and vistas (often the miniatures of more famous originals) that encourage quiet contemplation. The entrance, tucked away down a side street, can be a little difficult to find.
1-6-6 Koraku, Bunkyo-ku
|Transport:||Iidabashi Station (Namboku, Oedo lines), exit C3 or Korakuen Station (Marunouchi line), exit 2.|