Arikoyama Castle




Yamana Suketoyo built this castle in 1574 after his Konosumiyama Castle was defeated by Hideyoshi. Arikoyama Castle is just Xkm south of Konosumi Castle. Another name Konosumi Castle is Konusumiyama (盗山城) which looks like "stolen child". He named Arikoyama Castle (有子山城) "mountain where the child is" as a play on words from Konusumiyama. Arikoyama Castle was again attacked by Hideyoshi in 1580 when Seketoyo's son Akihiro was lord of the castle. After it fell to Hideyoshi, Maeno Nagayasu and then Koide Yoshimasa becams lords of Arikoyama Castle. Afer the Battle of Sekigahara, Koide fortified the foot of the mountain as Izushi Castle and abandoned the mountaintop Arikoyama Castle. After hiking up the mountain to get to the castle I can see why he wouldn't want to use it if it was no longer necessary. The Edo Period saw a more stable government with no local conflicts so many provinces moved from mountaintop castles to lower castles and put their efforts into building up the surrounding castle towns.

Visit Notes

I was really amazed at the extensive stone walls that remain here. It's second only to Takeda castle in Hyogo Pref. and should be one of the top mountaintop castles in Japan. Recently they cleaned it up by cutting back brush and trees so you can see the walls very nicely and even see them from the city. Maybe I would not have been so impressed a year ago. The trail to the top is fairly steep with poor footing in some places. Wear good shoes and plan enough time to get up and back. Carry a hiking stick if you have one. The way up may be fine but coming back back down it can be hard to get a stable footing. This castle also offers stunning views and is absolutely worth the hike.

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  • Honmaru stone walls
  • Trailhead
  • Hiking trail
  • Hiking trail
  • Hiking trail
  • vertical moat
  • bailey
  • Stone walls of the Ido Bailey
  • Stone walls
  • Stone walls and small baileys
  • Stone walls
  • Stone walls
  • Stone walls
  • stone walls
  • Stone walls
  • Stone walls
  • Stone walls
  • Honmaru stone walls
  • view from the Honmaru
  • horikiri between the Honmaru and Senjojiki bailey
  • Senjojiki Bailey
  • Honmaru stone walls
  • Map

Castle Profile
English Name Arikoyama Castle
Japanese Name 有子山城
Founder Yamana Suketoyo
Year Founded 1574
Castle Type Mountaintop
Castle Condition Ruins only
Designations Next 100 Castles, Top 100 Mountaintop Castles, National Historic Site
Historical Period Pre Edo Period
Features samurai homes, trenches, stone walls, castle town
Visitor Information
Access Toyooka Sta. (Line), bus to Izushi, 15 min walk from the last bus stop to the trail head
Visitor Information open anytime. The trail starts from the Inari Bailey of Izushi Castle (after the red torii gates).
Time Required 200 mins
Location Toyooka, Hyogo Prefecture
Coordinates 35° 27' 19.62" N, 134° 52' 41.23" E
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Added to Jcastle 2013
Admin Year Visited 2013
Admin Visits September 26, 2013

(one vote)
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58 months ago
Score 0++
I think one of your pinpoints has gone awry, placing the honmaru in the river!