Hamamatsu Castle, Japanese castle in Naka-ku, Hamamatsu, Japan
Hamamatsu Castle is a hirayama-style castle ruin in Naka-ku, Hamamatsu, with its donjon at the highest point in the northwest and the inner, second and third baileys aligned southeast. The stone walls are built in the nozura-zumi style from unshaped stones, and the compound measures about 500 meters north–south by 450 meters east–west.
Hikuma Castle, held by the Iio clan under the Imagawa, was taken by Tokugawa Ieyasu in December 1568 after Lady Otatsu's refusal to surrender. In 1570 he moved his base from Okazaki and renamed it Hamamatsu, partly because "Hikuma" (pulling horses) suggested defeat. He stayed 17 years, until 1586, when he moved to Sunpu.
Local people call this place the Castle of Promotion because many lords who served here later rose to higher ranks in government. This association with career advancement shaped how the fortress was remembered across generations.
The reconstructed three-story tower now holds a museum with clan-era objects and offers viewing points toward the Pacific. The surrounding park invites walking and connects historical remains with green spaces.
The foundations show the nozura-zumi technique where natural stones were stacked directly without any cutting or smoothing. This original building method remains visible at few castles in Japan as clearly as it does here.
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