Guide
Shiryokaku is a significant defensive fortification (daiba) located in Hakodate, Hokkaido, which played a crucial role during the Battle of Hakodate at the end of the Edo period. Situated on a terrace in Jinka-cho, north-northwest of Goryokaku, its structure is a beautiful example of a star fort (bastion-style) that resembles a butterfly spreading its wings. Today, it is carefully preserved as a National Historic Site. The vast site features earthen ramparts and dry moats that once served as vital defensive lines, inviting visitors to step back into the turbulent final days of the samurai era.
In 1868, during the Boshin War, the retreating forces of the Tokugawa Shogunate rapidly constructed the "Shiryokaku" defense post to prepare for attacks from the Imperial forces. It is said to have played a vital role in protecting the Hokkaido Toshogu Shrine, the guardian of Goryokaku. Legend has it that the site was completed in just a few days, with approximately 200 soldiers and 100 local residents mobilized under intense pressure. During the Battle of Hakodate in 1869, the retreating forces moved toward Goryokaku as the Imperial army advanced. Although the site fell into disrepair after the war, it was designated as a National Historic Site in 1934, and through the dedicated efforts of the community and local government, the historical landscape has been preserved to this day.
The greatest attraction is the visible remains of the "earthen ramparts" and "dry moats" that showcase the military architecture of the time. The ramparts, measuring approximately 100m east-to-west and 70m north-to-south, stand about 3m high and 5.4m wide, testifying to the strength of the original defenses. The surrounding 0.9m deep dry moat allows visitors to visually understand the fortress design that utilized the natural terrain. You can also find traces of former artillery positions, providing a tangible connection to the past. A peaceful walk around the site allows you to appreciate the historical ruins alongside the natural scenery.
Shiryokaku offers different charms depending on the season. In May, the area is beautifully adorned with blooming lily-of-the-valley flowers, adding a touch of natural beauty to the historical landscape. For those who wish to enjoy historical study or a quiet stroll, daytime is the best time to visit. Walking through the vast grounds during the day allows for a detailed observation of the military structures. You can enjoy a serene time feeling the weight of history amidst nature throughout the four seasons.
Visitors can enjoy a "historical stroll" to experience the footsteps of the Boshin War and the retreating Shogunate forces. Seeing the actual terrain and ramparts is a highly educational way to learn about Japanese modern history beyond what is found in textbooks. Visiting Shiryokaku in conjunction with Goryokaku provides a deeper understanding of the overall defensive system of Hakodate. As you walk through the maintained areas, you can reflect on the people who built this fortification and the historical context behind it.
Several important historical sites are scattered around the Shiryokaku area. Goryokaku, Hakodate's most famous landmark, is closely related to this site. Additionally, the nearby Hokkaido Toshogu (currently Kamiyama Inari Shrine) was built to protect the spiritual direction of Goryokaku. Exploring these locations together will deepen your understanding of Hakodate's historical defense lines and the spiritual culture of that era.