Okunoshima Island

Okunoshima Island is a small, peaceful island located in the Inland Sea of Japan, just off the coast of Hiroshima Prefecture. The island is globally known as “Rabbit Island” because it is home to hundreds of free-roaming, friendly rabbits that have become a major tourist attraction. These rabbits wander freely across the island and often approach visitors looking for food and attention.

In addition to the cute and playful rabbits, Okunoshima has a unique and complex history. It was once a secret site for poison gas production during World War II. Today, the island offers a mix of natural beauty, historical education, and relaxing recreational activities, making it a fascinating and enjoyable destination for visitors of all ages.

How to Reach Okunoshima Island, Hiroshima

Getting to Okunoshima Island involves a short ferry ride, but it’s easily accessible from Hiroshima or nearby cities like Osaka and Kyoto. Here is a step-by-step guide:

• Take the JR Sanyo Line to Tadanoumi Station. It takes about 2 hours from Hiroshima Station.
• From Tadanoumi Station, it’s a 5-minute walk to Tadanoumi Port.
• Catch the ferry to Okunoshima Island. Ferries run several times a day and take around 15 minutes.

If you're traveling from Osaka or Kyoto, you can use the Shinkansen to Mihara Station, then transfer to the local line toward Tadanoumi.

Weather on Okunoshima Island

Okunoshima enjoys a temperate climate, making it a pleasant destination year-round.

• Spring (March–May): Mild weather and cherry blossoms. Ideal for outdoor activities.
• Summer (June–August): Hot and humid, but great for beach activities. Average highs can reach 30°C (86°F).
• Autumn (September–November): Cooler temperatures and vibrant fall colors make this a favorite time to visit.
• Winter (December–February): Quiet and chilly but still accessible. Temperatures rarely drop below 0°C (32°F).

The best seasons to visit are spring and autumn due to comfortable weather and scenic landscapes.

Timings and Opening Hours

Okunoshima is open year-round. Since it is not a gated park but an open-access island, there are no specific opening or closing hours. However, ferry schedules are crucial for planning your trip:

• Ferries: Typically operate from early morning (around 7:30 AM) to early evening (around 6:30 PM), depending on the season.
• Accommodation check-in: If staying overnight at Kyukamura Okunoshima, check-in is usually from 3:00 PM.

It's best to arrive early to maximize your time on the island, especially if you're doing a day trip.

Why is Okunoshima Island Famous?

Okunoshima is most famous for its rabbit population. The island’s hundreds of tame rabbits are extremely friendly, often hopping up to visitors for food or attention. There are no predators on the island, and hunting is banned, making it a safe haven for the animals.

Aside from the rabbits, the island is also known for its dark history as a secret poison gas production site during World War II. The Japanese army used the island to manufacture chemical weapons, and the remains of the factories and storage facilities can still be seen. Today, a small museum educates visitors about this part of the island's history.

Entry and Visit Details

There is no fee to enter Okunoshima Island itself. Visitors just need to pay for the ferry ride, which costs approximately:

• One-way ticket: ¥360 (adults), ¥180 (children)
• Round-trip ticket: ¥720 (adults), ¥360 (children)

Entry to the Poison Gas Museum costs:

• Adults: ¥150
• Children (elementary and junior high school): ¥50

The museum is open from 9:00 AM to 4:30 PM (closed on Tuesdays and New Year holidays).

History and Architecture

During the 1920s and 30s, Okunoshima was chosen as the site for Japan’s secret poison gas production. Due to its remote location, it was ideal for keeping operations hidden. Over 6,000 tons of mustard gas and other chemical weapons were produced here until the end of World War II.

The poison gas factories were abandoned after the war, but their remains — including brick buildings, storage tanks, and military ruins — still exist. These sites offer a somber reminder of the island’s past. In 1988, the Poison Gas Museum opened to preserve this dark chapter of history and to promote peace.

Architecturally, most structures are ruins or basic facilities for tourists. There is one hotel, Kyukamura Okunoshima, which includes a restaurant, hot spring baths, and rental bikes.

Things to Do on Okunoshima Island

Okunoshima is perfect for nature lovers, history buffs, and animal enthusiasts. Here are some top activities:

• Feed the rabbits: Bring your own rabbit food (pellets or vegetables). Feeding them is fun and interactive.
• Explore the island trails: Walk or rent a bike to enjoy scenic paths, coastal views, and forested areas.
• Visit the Poison Gas Museum: Learn about the island’s wartime role through photos, documents, and exhibits.
• Relax on the beach: Enjoy swimming or sunbathing on the island's small sandy beaches.
• Stay overnight: Kyukamura Hotel offers a full-service experience with meals, baths, and guided tours.

Interesting Facts about Okunoshima Island

• The island is only about 4 kilometers in circumference, so it’s easy to explore on foot or by bike.
• The origin of the rabbit population is unclear — some believe school children released them in the 1970s.
• The island was removed from official maps during its time as a military base.
• There are more rabbits on the island than humans — hundreds of them live peacefully in the wild.
• Visitors are not allowed to bring cats, dogs, or other predators onto the island.

Tips for Visiting Okunoshima Island

• Bring rabbit food, as it's often not sold on the island. Use rabbit-safe treats like cabbage, carrots, or pellets.
• Wear comfortable shoes for walking or biking. The island is small but hilly in places.
• Be respectful of the wildlife — don’t pick up or scare the rabbits.
• Carry water and snacks, especially during warmer months. There are limited shops on the island.
• Check ferry times ahead of your trip to avoid being stranded.

Conclusion

Okunoshima Island is a truly unique destination that combines natural charm, fascinating history, and heartwarming wildlife encounters. Whether you’re petting a rabbit, hiking a scenic trail, or learning about the island’s past at the museum, there is something here for everyone. Just a short journey from Hiroshima, a visit to Rabbit Island offers an unforgettable mix of relaxation, education, and adventure.