The original castle was destroyed by the atomic bomb blast on August 6th 1945, which its epicenter was less than a kilometer from the castle. The present tower was reconstructed in 1958 and is now used to exhibits historic artifacts. Unfortunately, no cameras are allowed in the castle except on the 1st and 5th floor which serves as observation platform.
As seen in the first photo, the castle is surrounded by moat whose original purpose was to prevent from enemies' attacks, now from high rise apartments and mansions.
For a complete cyber tour, please visit http://www.jcastle.info/castle/profile/44-Hiroshima-Castle