There are two reasons to visit this historic site: the stunning natural beauty and the star fortress. The fort was constructed in the second half of the 19th century by the Tokugawa bakufu. Its design was inspired by the star forts constructed in Western Europe after the advent of the use of gun powder in warfare. Specifically, Takeda Ayasaburō, the architect of Goryōkaku sought his inspiration from the Marquis de Vauban, who constructed several star forts in the 17th century in France for Louis XIV. Star forts were first constructed in Italy to strengthen the defences of a position: the star shape increases multifold the number of men and guns that can be positioned on the fortification. It was interesting to see the fortress from many different locations: at ground level, from above--from the top of the tower--and from several positions in-between while in the tower. I would visit this site again given the opportunity. It is family friendly. There are restrooms in the park and in the tower structure, where there is also food, drinks and more.

We visited in early May, and the cherry blossoms were in full bloom. So many trees, and so many blossoms. It was one of the most beautiful things I have seen. Even if you are unable to visit during cherry blossom season, the fort and grounds are worth seeing, as well as the panoramic city view from the tower. The tower features statues of the historical figures associated with the fort as well as photographs, intricate miniatures and a lot of historical information although most of it is in Japanese. Like other parks and sites in Japan, it would be beautiful throughout the year as each season features it's own beauty.