
30/06/2025
Yasugi’s Gassan-Toda Castle — The legendary stronghold of the Amago clan 🏯✨
Once the seat of the powerful Amago clan (尼子氏) during Japan’s Sengoku period, Gassan-Toda Castle (月山富田城) stands atop Mt. Gassan in today’s Yasugi City's Toda area. It is considered one of Japan’s five greatest medieval mountain castles.
🗺️ The historic map shows the castle in its former glory—a mighty fortress protected by steep ridges, layered defenses, and a network of rivers and valleys. A stunning diorama model recreating the castle town is on display at the Yasugi Municipal Museum of History (安来市立歴史資料館), located at the base of the castle ruins.
🏯 First constructed in the 14th century, the castle reached its height under Amago Tsunehisa (尼子経久), a brilliant warlord born in nearby Izumo. Under his leadership, the Amago clan expanded its power across the San’in region. Today, a statue of Tsunehisa stands beside the Iinashi River, gazing up toward his former stronghold.
🦌 The castle is also tied to the legendary samurai Shikanosuke Yamanaka (山中鹿介), renowned for his unwavering loyalty to the Amago family. His heroic—and tragic—story is deeply woven into local history and is still honored in Yasugi.
⚔️ After fierce clashes with the advancing Mōri clan, the Amago fell, and Gassan-Toda Castle was eventually taken. In 1600, Horio Yoshiharu (堀尾吉晴) took over the site briefly before moving to Matsue, where he began building Matsue Castle, completed in 1611. With the power center relocated, Gassan-Toda Castle was abandoned and later dismantled.
🥾 Today, visitors can hike to the castle ruins (20–30 minutes on foot), where breathtaking views of the Hii River and the town of Hirose await. The site offers a peaceful, reflective atmosphere—ideal for history lovers and hikers alike.
▼ Nearby sites:
👉 Adachi Museum of Art (足立美術館) - Ranked as Japan's best Japanese Garden www.facebook.com/SaninHeart/posts/142243157266998
👉 Kiyomizu-dera Temple of Yasugi (安来清水寺)
www.facebook.com/SaninHeart/posts/161724571985523