The Kazusa Kokubun-niji was located on the northern bank of the Yōrō River, in an area with a high concentration of kofun and ancient sites, and is separated from the Kazusa Kokubun-ji, which was located a short distance to the southwest, by a shallow valley. After several archaeological excavations starting in 1948, the layout of the temple was confirmed. The total area of the temple complex was 372 meters north-to-south by 285 meters east-to-west, for a total area of 123,000 square meters, making it the largest nunnery in the kokubunji system yet discovered. The central enclosure, containing the main structures of the nunnery, measured 200 meters north-to-south by 170 meters east-to-west. The foundation stones for the South Gate, Middle Gate, Kondō, Lecture Hall, Cloisters, bell tower, sutra tower, and the residential building for the nuns have been found. In addition, there are traces of a metal workshop, medicinal plants garden and infirmary. In 1996 the Middle Gate and part of the Cloister were restored, and a museum (the Kazusa Kokubunnji Temple Ruins Exhibition Hall (上総国分尼寺跡展示館, Kazusa kokubuniji-ato tenji-kan) was built on the site to display various artifacts that have been unearthed. It also contains a large diorama showing how the temple complex may originally have looked. The site is a ten-minute walk from the Ichihara City Hall bus stop on the Kominato Railway Bus from Goi Station on the JR EastUchibo Line.[4]
