Simultaneously, over the years, the city of Hiroshima has metamorphosed into a memorial city filled with commemorative monuments dedicated to world peace. One of them was Sadako Sasaki, a young girl whose efforts to fold over 1,000 paper cranes sparked a global peace movement that persists to this day. That is the vision behind Hiroshima’s Flame of Peace, an eternal flame located in the Hiroshima Peace Memorial Park. However, the Hiroshima Paper Crane Association protested its destruction, and ultimately, it was designated as a memorial and a warning against nuclear weapons. The Hiroshima Peace BellHiroshima Peace Bell surrounded by lotus flowers | Atosan / ShutterstockThe Hiroshima Peace Bell was made by bell-caster Masahiko Katori and was completed on September 20, 1964.