An iris festival in Tokyo, the Katsushika Iris Festival is held at Mizumoto Park and Horikiri Shobuen, which collectively contain over 20,000 iris flowers.
A flower festival in Bunkyo, this mid-June event at Hakusan Shrine features 3,000 blooming hydrangeas. A miniature Mt. Fuji replica, the Fuji-zuka mound, is also opened to visitors.