Whatever the religion or whoever they're dedicated to, shrines have a way of making you contemplative. Visit Hiroshima Gokoku Shrine and share a moment of silence with the faithful.
When you've finished at this Hiroshima City Centre sacred place, why not check out Hiroshima Peace Memorial Park, Hiroshima Castle, and Atomic Bomb Dome? They're not very far from Hiroshima Gokoku Shrine and also a favorite with travelers.