The castle foundations contain 'Aoishi' (blue stones) which are a rare, greenish metamorphic rock native to the nearby Yoshino River.
The castle site was strategically positioned near the estuary of the Shinmachi River to control maritime access to the province.
The Hachisuka clan, who ruled Tokushima for nearly 300 years, were originally vassals to Toyotomi Hideyoshi.
The castle grounds were intentionally designed to integrate the surrounding natural terrain into the defensive perimeter.
Most of the current structures, including the gate, are faithful reconstructions aimed at preserving the historical layout of the Edo-period stronghold.
Tokushima Castle Ruins, known as Tokushima-jo, was originally established in 1585 by Hachisuka Iemasa following the subjugation of Shikoku by Toyotomi Hideyoshi. The site is uniquely defined by its massive Awa-no-Aoishi blue stone walls, which were quarried from the Yoshino River. While the original palace structures were destroyed during the Meiji Restoration, the site preserves significant stone foundations, moats, and the reconstructed Omotegomon Gate. The ruins are integrated into Tokushima Central Park, which spans the former castle grounds. The park features an extensive landscape garden known as the Jyousan-en, which utilizes the elevation changes of the former fortress. The castle was historically vital for controlling the region and serves as a primary example of Edo-period fortifications in the Shikoku area. The Tokushima Castle Museum is located on-site, housing artifacts related to the Hachisuka clan and the local feudal history.
The view of the reconstructed Omotegomon Gate framed by the surrounding park greenery.
Visit the Tokushima Castle Museum located within the park to see the original castle layout plans and armor.
Walk the perimeter of the inner moat to see how the stone walls meet the water, a classic feature of Japanese flatland-mountain castles.
Bring comfortable walking shoes to navigate the stone staircases that lead to the higher sections of the ruins.
Do not attempt to climb or sit on the historical stone walls, as they are fragile and structurally significant.
The Tokushima Castle Museum is closed on Thursdays.
