皇居東御苑 KOKYO HIGASHIGYOEN
The East Gardens, where Edo Castle once stood. There is a spacious lawn where you can buy souvenirs related to the imperial family. Although there is no castle tower, the large stone walls are overwhelming. There are also the ruins of the famous “Chushingura” (the story of Chushingura) pine corridor. You can enjoy such a historic place for free.