Hikone Castle

Hikone Castle is a prominent Edo-period fortress located in the city of Hikone within Shiga Prefecture, Japan. Situated originally on the shores of Lake Biwa, though now about one kilometer away due to land reclamation, the site served as a strategic bottleneck on the Tōsandō highway connecting the ancient capital with eastern provinces. Construction of the castle began in 1603 under the direction of Ii Naomasa, a trusted general of Tokugawa Ieyasu, and was completed in 1622 by his successor, Ii Naokatsu. The Ii clan controlled the stronghold from 1622 until 1874, utilizing its hirayama-style design to protect the capital from potential eastern attacks. The structure is built primarily from wood, stone, plaster, and tile, reflecting the architectural standards of its era.

The castle holds immense historical significance as one of only twelve Japanese castles that retain their original tenshu, or main keep. It is further distinguished as one of just five castles in the nation with buildings designated as National Treasures. Recognized as a National Special Historic Site since 1951, it is considered the most important historical landmark in Shiga Prefecture. While the main keep remains largely intact from the early seventeenth century, the inner palace was reconstructed in 1987 to restore the complex's former grandeur. Today, the castle stands as a well-preserved monument to the Edo period, offering visitors a rare glimpse into authentic feudal military architecture.

The site's history is deeply intertwined with the rise of the Tokugawa shogunate following the Battle of Sekigahara. Ii Naomasa chose this specific location to replace the nearby Sawayama Castle, which he deemed obsolete and politically tainted by its association with defeated rivals. By establishing a new seat of power on the grounds of a former Buddhist temple, the Ii clan created a fortified domain that remained influential for over two centuries. Currently maintained by the Japanese government, Hikone Castle continues to serve as a vital cultural asset, preserving the legacy of the Ii family and the defensive strategies of feudal Japan.