
Guide
Sasayama Castle is a historic hill castle located in the center of the Sasayama Basin in Tanba-Sasayama City, Hyogo Prefecture. It was constructed in the early Edo period by order of Tokugawa Ieyasu to serve as a strategic stronghold to monitor the western daimyo lords. Today, it is designated as a national historical site. The site is characterized by its well-preserved castle ruins, the surrounding historic townscape, and a stunning landscape featuring approximately 1,000 cherry trees. Interestingly, due to its extremely robust and formidable structural design, a central keep (tenshu) was never actually constructed, which is a unique part of its historical background.
In 1609 (the 14th year of Keicho), the castle was constructed under the direction of Todo Takatora, following orders from Tokugawa Ieyasu. It is said that the construction was completed in just six months under the supervision of Ikeda Terumasa. The castle's layout was designed to be highly defensive, with the Honmaru (inner bailey) and Nino-maru (second bailey) protected by inner moats, and specialized gates (umadashi) positioned at the east, north, and south entrances. The earthen walls surrounding the Nino-maru were engineered to eliminate blind spots for defense. During the Edo period, the Nino-maru palace served as the administrative center for the domain. While many structures were dismantled during the Meiji era, some buildings were repurposed as elementary schools and community centers, continuing to serve the local community through the ages.

The most striking feature of Sasayama Castle is the seamless integration of the castle ruins with the surrounding townscape. The remains of the Umadashi (gate outworks) in the east and south are precious structures that demonstrate the sophisticated defensive techniques of the era. Additionally, the roughly 1,000 cherry trees surrounding the site create a spectacular view that changes with the seasons. The castle town itself, with its white-walled merchant houses and samurai residences, offers a nostalgic journey back to the Edo period. The