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Onigajo Castle (Kumano City, Mie Prefecture)

2025 11/10
November 10, 2025
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Overview (history, characteristics, attractions)

Onigajo is a scenic spot of sea cliffs, caves, and strangely shaped rock formations along the Kumano Sea in Kumano City, Mie Prefecture. The cliffs and intricate caves created by erosion from waves and wind over many years create a striking contrast between the dark rock surface and the blue sea. The natural fortress-like landscape has long been a focus of attention among locals, and the area is nicknamed "Onigajo" (Demon Castle) due to the legends surrounding demons and the origin of the place name.

There are walking trails along the coastline, offering great views, points where you can see inside the cave, and the rock formations jutting out into the sea up close. The impressive views at sunset and on rough days are especially popular. The area has been turned into a park, making it relatively easy to access as a tourist destination.

Highlights

  • Sea caves and strange rock formations: A landscape of caves formed by the waves and pillar-like rock formations.
  • Promenade (Onigajo Promenade): A walking path along the sea. There are safety fences and observation points, making it ideal for photography.
  • The ocean and spray seen through the cave: You can get a close-up look at the powerful waves in rough weather (may be closed).
  • Sunset and morning views: The gradation of the sea and sky on a clear day, and the moment when the setting sun shines on the rock face are recommended times for taking photos.
  • Observing the surrounding nature: You can also enjoy observing the plants and seabirds that grow in the sea breeze.

Access (nearest station, transportation, etc.)

  • Nearest train station: Kumanoshi Station on the JR Kisei Main Line
  • Train + Bus/Taxi: From Kumanoshi Station, take a local bus such as Mie Kotsu, which takes about 15 to 25 minutes (the route and number of buses varies depending on the season). By taxi, it takes about 15 minutes. It is recommended to check the timetable in advance.
  • By car: Accessible via National Route 42. Approximately 10-20 minutes by car from central Kumano City (depending on traffic conditions). Parking is available (tourist parking spaces). It may fill up during peak seasons and tourist seasons, so it is recommended to arrive early.
  • Other: During the tourist season, it may be incorporated into sightseeing bus tours of the surrounding area.

Estimated stay (estimated time required)

  • Quick tour: A walk around the main trail takes about 30-45 minutes.
  • Take your time observing and taking photos: If you want to take photos and enjoy the scenery at the caves and observation points, it will take about an hour.
  • Strolling around the surrounding area: 2-3 hours if you want to visit nearby beaches (Shichirimihama, etc.) and surrounding facilities.

Nearby spots

  • Shichiri Mihama: A long stretch of coastline in Kumano. Perfect for strolling and enjoying the sunset.
  • Kumano city: Restaurants, souvenir shops, local historical sites, etc.
  • Around the Kumano Kodo (each route): You can access the entrance to the Kumano Kodo and walking spots by car.
  • Local shrines and historical sites: There are many spots where you can experience the culture and history of the Kumano region.

Things to be aware of (crowds, manners, seasonal precautions, etc.)

  • Weather and sea conditions: Parts of the promenade may be closed during high tides or stormy weather. Please check local signs and city tourist information in advance. Do not enter during high waves.
  • Safety precautions: The promenade is close to the sea, and the rocks can be slippery on windy days or when wet. Please wear comfortable shoes (sneakers, etc.) and keep an eye on children.
  • Crowds: It gets crowded on weekends, consecutive holidays, and during the summer tourist season. In particular, you may have to wait in line at the photo spots, so if you aim to go early in the morning or in the evening, you can enjoy a more relaxed view.
  • Manners: Please be considerate of the natural environment and local residents by taking your trash with you, not entering restricted areas, and keeping noise to a minimum.
  • Barrier-free access: Some of the trails have steps and are narrow, making them difficult to navigate for wheelchairs and strollers. Please check the local information in advance.
  • Seasonal precautions: Take precautions against the heat and UV rays in summer, and beware of the cold winds and strong winds from the sea from winter to spring. It's a good idea to bring insect repellent and drinks.

Before visiting, it's a good idea to check the latest opening and transportation information with the Kumano City Tourist Association or local facility guides. Take your time to enjoy the unique landscape woven by nature, along with the surrounding culture.

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