At the time of the attack on Hiroshima, three-year-old Shinichi Tetsutani was outside his home doing what he loved most – riding his tricycle.

He suffered major injuries, including burns to his whole body, and died several hours later. His two sisters, Michiko and Yoko, were also killed.

Their father remarked years later: “This should never happen to children. Please work to create a peaceful world where children can play to their heart’s content.”

Shinichi’s burnt tricycle is now on permanent display at the Hiroshima Peace Memorial Museum, and a sculpture based on it can be found at the International Red Cross and Red Crescent Museum in Geneva.

It has become a poignant symbol of children’s suffering in the nuclear attacks.