Castle & Palace · Awaji Island (Sumoto)
Sumoto Castle Ruins (Mt Mikuma) 洲本城跡（三熊山）
Mountain-top castle ruins on Awaji Island with huge stone walls and a 1928 mock keep that is the oldest in Japan.
HoursAlways open
PriceFree
Getting thereSumoto Bus Center, 10 min by taxi
Time needed1-2 hours
Best timeClear days; night view
Address1272-2 Kojitani (Mikumayama Park), Sumoto, Hyogo 656-0024
About
Sumoto Castle was built up by Wakisaka Yasuharu into one of western Japan's largest fortresses. Massive stone walls survive on Mt Mikuma, and a small mock keep built in 1928 (Japan's oldest concrete mock keep) serves as a lookout over Sumoto, Osaka Bay and the Kitan Strait. Continued 100 Fine Castles of Japan.
Highlights
- Continued 100 Fine Castles
- Huge stone walls
- View over Osaka Bay
Tips
- Free and always open
- Taxi 10 min from Sumoto bus centre or drive up
Open in Google Maps · Info checked 2026-10-11
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Open in the appNearby
- Awaji Island SUP & Kayak Information CenterKayak & SUP · 12.6 km away
- Izanagi JinguShrine · 14.3 km away
- Keino MatsubaraBeach & Waterfront · 15.1 km away
- Uzushio Cruise (Naruto Whirlpools, Fukura Port)Boat Rentals & Cruises · 19.2 km away
- Awaji Jyanohire Outdoor Resort (SUP & Sea Kayak)Kayak & SUP · 20.2 km away
- Bicycle Hub AwajiBike Tours & Rentals · 23.8 km away
- Cyclism AwajiBike Tours & Rentals · 27.8 km away
- Nijigen no MoriTheme Park · 27.9 km away