This study is a data-driven research using an open excavation database with publicly available geospatial information, combined with the results of previous studies in historical disaster research and other historical materials. The target area is the site of Heian-kyo in Kyoto City, dealing with great fires in the early modern period. The excavated fire traces were analyzed on GIS by overlaying them with the reconstructed damage area of previous studies in historical geography and kasai-zu (maps of fire disaster). As a result, many of the excavated fire traces were found to be within the damage area of the previous studies, and there were points where the validity of the damage area was enhanced. However, the excavated fire traces were also found in some areas that were not included in the affected area in previous studies, suggesting that the affected area should be reconsidered.
