Hiroshima Castle (Carp Castle), Hiroshima-shi

What "Carp Castle" lacks in grandeur or historical authenticity, the original castle was destroyed by the bomb, it makes up for in a pleasant park-like environment. Designated a national treasure in the 1950s, reconstruction of the donjon and some of the outbuildings began shortly thereafter. Overgrown foundations give the grounds an enjoyably unkempt air. The five-story castle donjon houses a collection of swords, armor, a display of "instruments used to make an arrest" and exhibits related to Hiroshima's past. Opens daily at 9 am.