Goryokaku Ruins, a star-shaped fortification, is designated as a special national historic site. It was the scene of the Hakodate War, the last battle of the Boshin War. Goryokaku was the last fortress for the former shogunate forces led by Takeaki Enomoto and Toshizo Hijikata. It is commonly known as Goryokaku Park. In spring, it is a cherry blossom viewing spot, and in winter, the moat is surrounded by illuminations. The restored Hakodate Magistrate's Office is also a sight to see.

Today, approximately 1,530 trees are in bloom. When the flowers are falling, the surface of the moat is covered with petals called "hanakada," which offers a different experience from when the flowers are in bloom. The area is crowded with citizens who gather to view the cherry blossoms around major holidays. In addition to cherry blossoms, other flowers such as azaleas, azaleas, and water lilies are also beautiful.

The moat is surrounded by a 1,800-meter promenade, and many citizens enjoy jogging and walking along the path. In winter, the frozen moat is covered with snow, creating an ethereal world. Goryokaku Park offers beautiful scenery in every season. If you visit Hakodate, be sure to take a leisurely stroll through Goryokaku Park.