Koishikawa Kōrakuen Garden is adjacent to Tokyo Dome City and is one of two surviving Edo period clan gardens in modern Tokyo, and one of the oldest and best preserved. The hanging sakura Shidare-sakura are blooming there already. A weeping cherry tree more than a hundred years old once stood here but the current tree was planted to succeed that old tree and is estimated to be 60 to 70 years old.