Nagakubo Castle

Revision as of 13:19, 26 January 2023 by ART (talk | contribs)
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)



There are a few different theories about the early history of this castle, but they all indicate that a castle or fort could be found on this site back to the Kamakura Period. In 1537, Hojo Ujitsuna made use of some of the pre-existing earthworks to rebuild a new castle as the Hojo looked to extend their domain into the Sunto region. Nagakubo Castle would become one of the hot spots of battles between the Hojo, Imagawa and Takeda clans. In 1545, Imagawa Yoshimoto with help from the Takeda and Uesugi took Nagakubo castle. In 1568 the Hojo took the castle back again from Takeda Shingen who was controlling the castle at that time. A truce was made between the Hojo and Takeda in 1571 and the castle passed back to Takeda hands where it would remain until the end of the Takeda clan in 1582. From that point the castle was under the control of Tokugawa Ieyasu. Matsudaira Ietada fortified and enlarged the castle and it was used as an offensive base by Ieyasu against the Hojo for the siege of Odawara. The castle was abandoned in 1600 when the then lord Nakamura Kazuuji was moved to Yonago.

Visit Notes

Unfortunately the history of the castle is much more exciting than a visit to this site. The only remains are a few earthen embankments which you can barely make out. Much of the castle has been developed over and even the hillside has been excavated for a road. The extant earthworks you see are of the Hachiman and Minami baileys.

Loading map...

  • South Bailey
  • Earthen embankment
  • South Bailey embankment
  • Outside of the bailey
  • South Bailey
  • Earthen embankment
  • Bailey as a playground
  • Earthen embankment
  • Playground
  • Earthen embankment

Castle Profile
English Name Nagakubo Castle
Japanese Name 長久保城
Founder Hojo Ujitsuna
Year Founded 1537
Castle Type Mountaintop
Castle Condition Ruins only
Historical Period Pre Edo Period
Visitor Information
Access Nagaizumi Nameri Sta (Gotenba Line), 16 min walk
Visitor Information Park is open any time, there are no signs indicating the castle remains.
Time Required 20 mins
Location Nagaizumi, Shizuoka Prefecture
Coordinates 35° 8' 53.95" N, 138° 53' 23.32" E
Loading map...
Added to Jcastle 2014
Contributor Eric
Admin Year Visited 2014
Admin Visits June 20, 2014
Friends of JCastle
Jōkaku Hōrōki
Oshiro Tabi Nikki

(2 votes)
Add your comment welcomes all comments. If you do not want to be anonymous, register or log in. It is free.



13 months ago
Score 1++
Nagakubojō is an earthworks castle ruin. The remains of Nagakubojō can be found at the Jōyama Shrine. These earthworks, principally dorui (earthen ramparts), are all that remains of what was once quite a large medieval fort. The ruins actually represent one of Nagakubojō’s outer baileys, and not the central compound; one might imagine that the ruins used to be quite impressive then, but eventually they were developed over and are now destroyed or buried.