Nichibunken Databases Large Map is a Web GIS site using high-resolution aerial photo as a base map. You could get three-dimensional values by clicking on the monitor, and you could view spatial information of archaeological sites on the base map. We published aerial photo of Nara, Kyoto and a part of Shiga prefecture, a database of summary in archaeological report, and a ancient map of Heian-kyo on this site. We are making effort to expand our contents now.