Nabekura Castle

Nabekura Castle is a mountain fortress on Nabekura-yama hill in Tono that rises approximately 70 meters (230 feet) above the surrounding landscape. The site displays typical features of 16th-century castles with dry moats, earthen walls, and an oblong central area surrounded by defensive structures.

The Asonuma clan built this fortress in 1573 as they relocated from a previous stronghold to strengthen their position in the region. Control eventually passed to the Nanbu clan, reflecting shifting power dynamics among local clans during Japan's feudal period.

The castle grounds connect to regional folklore traditions documented in local histories of Tono, reflecting stories of mountain spirits and clan disputes. Visitors walking the site today can sense how these narratives shaped the place's cultural identity over centuries.

The fortress can be reached from Tono Station by a 15-minute walk or by car in about 20 minutes from the nearest expressway exit. Wear comfortable walking shoes and prepare for uneven terrain, as the grounds involve climbing and steep paths across the hillside.

The fortress was positioned to overlook the Rainai-gawa river, which served as a natural water defense and shaped its strategic importance. This geographic relationship demonstrates how castle builders incorporated the landscape into their defensive designs.