Fukuoka Castle Ruins, located in the Chuo Ward of Fukuoka, Japan, are the remnants of a castle that played a significant role during the Edo period. Constructed between 1601 and 1607, this castle once boasted impressive defense mechanisms and structures, including turrets, gates, and an expansive moat. It was the largest castle in Kyushu, reflecting the power of the Kuroda clan, rulers of the Fukuoka Domain. Unfortunately, the castle did not survive the Meiji Restoration, which led to the dismantling of feudal domains and the modernization of Japan. In the early 20th century, the ruins were incorporated into Maizuru Park, which now offers a peaceful contrast to the surrounding urban environment. The remaining stone walls, some gates, and yagura (watchtowers) still conjure images of its past grandeur. Visitors can walk among the ruins and enjoy cherry blossoms in spring, making it a popular hanami spot. The site is also a vantage point for panoramic views of the city, particularly during the Fukuoka Castle Sakura Festival.