Visitors gather to ring the peace bell at the Children's Peace Monument near the Peace Museum and leave lei of a thousand folded paper cranes. "... we presented the paper cranes we had made at the beautiful Children's Peace Monument in the park. The paper cranes are a tradition started by Sadako Sasaki, a young girl afflicted with leukemia caused by radiation who had steadfastly folded 1,000 cranes ini hopes of a cure in her hospital bed before she died." The monument was built in memory of Sadako."