Sadako's classmates refused to let her story end with her death. They launched a fundraising campaign that spread through schools across Japan -- children donating their pocket money, their lunch money, their small coins -- until enough had been collected to commission a monument. Designed by artists Kazuo Kikuchi and Kiyoshi Ikebe, the statue was unveiled on May 5, 1958, Japan's Children's Day holiday. At the top of the monument stands a bronze figure of Sadako, arms raised, holding a wire crane above her head. Below her, two other children -- a boy and a girl -- represent both the tens of thousands of children who died in the Hiroshima bombing and the children everywhere who desire peace. The main statue is entitled "Atomic Bomb Children," a name that carries the weight of what these figures represent: not individual loss but collective catastrophe visited upon the youngest and least responsible.

Beneath the monument's main structure hangs a bronze crane suspended from a traditional peace bell, donated by Nobel Prize-winning physicist Hideki Yukawa. When wind pushes the crane against the bell, it sounds a clear note across the park -- a chime that requires no human hand to ring. The design is deliberate: the monument speaks for itself, powered by nothing but air. At the base of the structure, a black marble slab bears an inscription in Japanese. The monument sits within Hiroshima Peace Memorial Park, surrounded by other memorials to the bombing, but it occupies a distinct emotional register. Where the Atomic Bomb Dome stands as a preserved ruin and the cenotaph as formal memorial architecture, the Children's Peace Monument belongs to the children who built it and the children who continue to visit it. Its scale is human rather than monumental, intimate rather than overwhelming.

The most striking feature of the Children's Peace Monument is not the statue itself but what surrounds it. Glass cases at the base overflow with origami cranes -- thousands upon thousands of them, folded by children from every continent, shipped to Hiroshima in boxes and envelopes, draped in colorful chains around the monument's base. The city of Hiroshima receives approximately ten million paper cranes annually, most of them sent to the monument. Schools in Japan, the United States, Europe, and elsewhere incorporate crane-folding into peace education curricula, and the act of folding has become inseparable from Sadako's story. The cranes are regularly cycled out to make room for new arrivals, but the monument is never without them. In 2024, the organization Nihon Hidankyo -- which represents the surviving hibakusha -- received the Nobel Peace Prize for its efforts to prove through testimony that nuclear weapons must never be used again. Sadako's cranes, folded in a hospital bed seven decades ago, remain the most widely recognized symbol of that cause.

There is something essential about the fact that this monument was funded by children. Adults built the bomb. Adults chose the target. Adults made the calculations about acceptable casualties and strategic necessity. The children of Hiroshima had no voice in any of it. When Sadako's classmates decided to build a monument, they were asserting a claim that had been denied to them: the right to shape how this history would be remembered. They chose not a weapon or a ruin but a girl holding a crane -- an image of hope so fragile it seems impossible, and so persistent it has endured for nearly seventy years. The monument does not argue. It does not accuse. It simply stands in the park, holding its crane up to the sky, surrounded by the folded prayers of children who were not yet born when the bomb fell but who understand, in the way children understand difficult truths, that what happened here must not happen again.