Seba Castle (Sanada)




Sebajō is thought to have been first built by the Yokō Clan, who were a branch clan of the Unno Clan, in 1468. According to the "Old Book of Suwa Talismans (諏訪御符礼之古書)", the Murakami Clan attacked the Unno Clan stronghold of Chibajō, and it is thought that this Chibajō was in fact the original Sebajō. Sanada Yukitaka restored the castle following the expulsion of the Murakami from Toishijō and and its branch forts in 1551, and the ruins date to this time. The residential portion of the castle was located at the foot of the castle mount but there is a school there now.

Visit Notes

For this picture set I have included pictures of "ART Vision" so as to better highlight the castle remains shown in the photos. Sebajō straddles a long ridge which has been terraced to form a series of pocket baileys climbing up the mountain like a stairway. It's a formidable arrangement of baileys. There is a wide trench to the rear of the shukuruwa (main bailey), and remnants of dorui (earthen ramparts). I also encountered a snake here. It slithered right across my path. Its colourful scales were a checker pattern of black and red on mostly green with yellow parts on its underside. This type of snake is called Yamakagashi and is venomous. Luckily it prefers to flee over attacking.


Castle Profile
English Name Seba Castle (Sanada)
Japanese Name 真田洗馬城
Alternate Names Chibajō, Horinouchijō
Founder Yokō Clan
Year Founded 1468; 1551
Castle Type Mountaintop
Castle Condition Ruins only
Designations Local Historic Site
Historical Period Pre Edo Period
Artifacts Kuruwa, Dorui, Hori
Features trenches
Visitor Information
Access Ueda Station on the Shinano Railway; Sugadaira Bus from Ueda Station No.3 Bus Stop
Visitor Information Free; 24/7; Mountain
Time Required 50 minutes
Location Ueda, Nagano Prefecture
Coordinates 36° 27' 32.54" N, 138° 17' 23.21" E
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Added to Jcastle 2020
Contributor ART
Admin Year Visited Viewer Contributed

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