Sankouji Fort


KaiSankoujiRui (1).JPG


Sankōji-rui, also called Minamigejō-yashiki, is said to have been the residence of the Ayusawa Clan. It was later the site of the residences of the Iwata and Akiyama clans. These residences may have overlapped, and it's not certain which the ruins left today represent, or which residences encompassed the site of Sankōji temple. The segment of remaining earthen ramparts are thought to have ran for at least 60m in length east-west along the north of the site.

Visit Notes

I found some interesting things at Sankōji, the temple for which this medieval fort site is named, but nothing definitive. The dorui (earthen ramparts) which two high calibre castle bloggers point to appear to have been encroached upon by modern housing. Very new looking houses stand today where a dorui segment is supposed to be. I was able to find an image of some dorui on Google Maps' street-viewer, however, dated 2019. Satellite imagery from 2022 is unclear. If I have this right then there is a surviving clump of dorui but it is very small. I must've missed it. Somebody reported it being 60m long at some point! The site is otherwise modern housing, fields, and the temple Sankōji. I went to temple and was interested in some configurations of mounded earth, now clad in stone retaining walls, which looked like they could've formed some sort of gate complex. I can't confirm any relation to the former fort, but it's possible - to my mind - that it represents some residual remains of the site's southern ramparts.


Castle Profile
English Name Sankouji Fort
Japanese Name 三光寺塁
Alternate Names Minamigejō-yashiki 南下条屋敷
Founder Ayusawa Clan
Year Founded Medieval Era
Castle Type Fortified Manor
Castle Condition Ruins only
Historical Period Pre Edo Period
Artifacts Dorui
Visitor Information
Access Nirasaki Station on the Chūō Main Line; 15 minute walk
Visitor Information 24/7 free; fields
Time Required 20 minutes
Location Nirasaki, Yamanashi Prefecture
Coordinates 35° 43' 11.78" N, 138° 26' 42.29" E
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Added to Jcastle 2022
Contributor ART
Admin Year Visited Viewer Contributed
Friends of JCastle
Oshiro Tabi Nikki

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