Tsukui Castle

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The original fortification was built by the Tsukui clan during the Kamakura Period, but the castle remnants we see today all date from the Sengoku Period. In the latter half the the 1500's, it was an important castle in the Hojo castle network. Tsukui Castle was near the border of the Takeda lands and looked out over the Sagami River. It also served as a smoke signal tower to send signals to other points in the Hojo defensive network. Defense of Tsukui Castle was managed by the Naito clan, one of the chief retainers of the Hojo. The castle was defeated by Honda Tadakatsu and Hiraiwa Chikayoshi in Hideyoshi's campaign against the Hojo in 1590. After the fall of the Hojo, Tsukui Castle was decommissioned. In the Edo Period a jin'ya, or government administrative office, was established at the foot of the mountain just next to the current Park Center.

Visit Notes

You have to look hard to find castle remnants here but the park is well signposted which helps your enjoyment of the site. Stop by the park center before visiting the castle ruins to find maps, brochures, a model and other information about the castle. There are some trails to the east of the Takauchiba marked as "steep", proceed with caution. They are indeed very steep and there are no additional castle remnants to see. Much of the steep part is going up/down holding a chain or rope.

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  • Location of the lord's palace
  • Tatebori, vertical moat
  • vertical moat, tatebori
  • small bailey
  • Karoyashiki bailey
  • Stonework of the Karoyashiki bailey.
  • Karoyashiki stoneworok
  • Small bailey
  • Small bailey outside the honmaru
  • honmaru entrance
  • Honmaru map
  • small bailey outside the Honmaru
  • Entrance to the honmaru
  • Kome Kuruwa
  • Honjo Kuruwa
  • Earthen embankment of the Honjo Bailey
  • View from the top of the mountain
  • horikiri
  • Taiko Bailey
  • Path to the Iizuna Bailey
  • Entrance to the Iizuna Bailey
  • Along the side of the Iizuna Bailey
  • Takara-ga-ike pond
  • horikiri
  • The path to the Takauchiba.
  • Takuchiba Bailey
  • Steep hiking trail.
  • small bailey
  • Horse stabling area
  • Map of the full mountain
  • Map of the top of the mountain
  • Diorama in the park center.
  • Diorama in the park center

Castle Profile
English Name Tsukui Castle
Japanese Name 津久井城
Founder Tsukui
Year Founded 15th C.
Castle Type Mountaintop
Castle Condition Ruins only
Designations Top 100 Mountaintop Castles
Historical Period Pre Edo Period
Features trenches, stone walls
Visitor Information
Access Hashimoto Sta. (JR or Keio Line); bus to Lake Tsukui Visitor Center, 20 min walk
Visitor Information The Park Center is open 8:30-17:15 daily except for the New Year's holidays
Time Required 120 mins
Website http://www.kanagawa-park.or.jp/tsukuikoshiroyama/index.html
Location Sagamihara, Kanagawa Prefecture
Coordinates 35° 34' 58.80" N, 139° 16' 43.68" E
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Added to Jcastle 2013
Admin Year Visited 2013
Admin Visits Nov. 30, 2013

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