The biggest feature is that the stone walls of the main citadel, which survived the bombing, remain as they were at the time, and the reinforced concrete castle tower, which was rebuilt in 1958, stands next to it. The rebuilt castle tower functions as a history museum, and displays in an easy-to-understand manner the life of the castle lord and the castle town at the time of the castle's construction, the damage caused by the atomic bomb, and the progress of postwar reconstruction. Within the castle, 186 trees officially registered as atomic bomb-affected trees are dotted, including representative eucalyptus, Japanese silverleaf, and ginkgo, quietly conveying a desire for peace. From the top floor, you can get a panoramic view of Hiroshima city and experience the current cityscape that has been reborn as a city of peace.

Within the park, stone monuments and information boards have been installed on the site where the turrets and gates once stood, allowing you to recall the size and function of the castle at that time. The area around the moat has been developed into a walking path, and is beautifully colored with cherry blossoms in spring and autumn leaves in autumn, making it a place of relaxation for local residents and tourists. Although many parts have been restored, Hiroshima Castle, with its story of recovery from the atomic bomb and the preservation of history, has a unique value different from other surviving castle towers.

[Trivia]

- Hiroshima Castle's other name, "Rijo" (Carp Castle), is said to come from the many carp swimming in its moat and the shape of the castle, which resembles a carp.

- Although the castle tower was destroyed in the atomic bombing, the foundations and the stone walls of the main citadel remain as they were at the time, making it a valuable historical site that conveys the memory of the bombing.

- Every spring, a light-up event called "Hiroshima Castle Lights" is held, where you can enjoy the fantastic contrast between the cherry blossoms at night and the castle.