Hiroshima Peace memorial park is a must to visit when you go to Hiroshima, it is here you can feel the somber reminder and history of the horror of world war 2, it is also here where you can see the Japanese strong message to the world, NO MORE ATOMIC BOMB war.
This was a massive park and with in it, is the Musuem, I suggest spend 1 day in these park and museum alone.
Alo Japan.