The front-back circular mound located at the northern end of the Furuichi Kofun group. Tsukizo was in the late 4th century. The length of the mound is 210m, with a double moat and dike at the time of construction, and the total length is about 400m when the outer moat, which is now a residential area, is included. The name of "Jōzan" is due to the construction of a castle on a burial mound during the Sengoku period. At the end of the Meiji era, a stone pit and a long-shaped sarcophagus were found from the rear circle, and a number of copper mirrors, magatama, and swords were excavated. The water bird-shaped Haniwa excavated from the inner moat is a nationally designated important cultural property. The burials were unknown, and only the top of the rear circle was ruled by the Imperial Household Agency as "Fujiidera Tomb Reference Site". It is a country-designated historic site and one of the constituent assets of the World Cultural Heritage Site "Hyakutan Bird/Furuichi Kofun". There is also the Tsudō Hachiman Shrine within the mound hill, the flower shobu garden at the site of the inner moat, and the Tsudō kohana garden where the rape and cosmos bloom.