She had headed out that morning to collect some belongings from their previous residence, just 300 meters from what is now known as the Gembaku or A-bomb dome, famous for being the only building in the immediate area to have survived the blast.

Source: https://krdo.com/news/national-world/cnn-world/2023/05/19/he-survived-the-hiroshima-bombing-now-putins-nuclear-threats-are-bringing-it-all-back/