Yokoamicho Park-Memorial Hall
2021年10月17日 07時21分It was built as an earthquake memorial hall to house the unidentified remains of the Great Kanto Earthquake and to enshrine the spirits of those who died.
Later, the unidentified remains of the Tokyo Air Raid were enshrined, and the spirits of the deceased were enshrined in the current form.
Wikipedia
https://ja.wikipedia.org/wiki/%E6%9D%B1%E4%BA%AC%E9%83%BD%E6%85%B0%E9%9C%8A%E5%A0%82
https://en.wikipedia.org/wiki/Yokoamich%C5%8D_Park