* Image is for illustrative purposes only.Yuzuki Castle
湯築城
Yuzuki Castle is a historic castle in Shikoku dating from the Founded by the Kono Clan as their stronghold in the early 14th century during the Northern and Southern Courts period. Fell and was abandoned in 1585 (Tenshō 13) during Toyotomi Hideyoshi's Shikoku Campaign in the late Sengoku period., whose lord was Kono Clan (Iyo Kono family).
Overview
Yuzuki Castle is a medieval yamashiro (mountain castle) located in Dogo Park, Matsuyama City, Ehime Prefecture, which served as the primary stronghold of the Kono Clan, a powerful family in Iyo Province (present-day Ehime Prefecture), for approximately 250 years. Situated just a few hundred meters north of Dogo Onsen, the castle's outer and inner moats and double earthen ramparts remain largely intact today and are open to the public as a castle ruins park. It is designated as a nationally designated historic site and was selected as one of Japan's 100 Famous Castles in 2006 (Heisei 18).
The castle's origins date back to the Northern and Southern Courts period (early 14th century). The Kono Clan was originally a clan of kaizoku (maritime warriors) based in Kazahaya that united Iyo's maritime warriors, and during the Genpei War, they commanded the Minamoto clan's naval forces. Throughout the Kamakura and Muromachi periods, they expanded their control throughout Iyo Province. During the Northern and Southern Courts conflict, they survived by aligning with the Southern Court while opposing the Ashikaga shogunate, ultimately establishing themselves as Iyo's greatest Sengoku daimyo.
Yuzuki Castle was built on an isolated hill approximately 62 meters above sea level as a hirayamajiro (flat-mountain castle), characterized by a layout with double moats and earthen ramparts surrounding the entire hill. Excavations have revealed numerous structures including foundation stones, stone paving, wells, and samurai residences, making it an important research site for medieval castle studies. Within the castle grounds, a samurai residence has been reconstructed, with exhibition facilities allowing visitors to experience samurai life of that era.
In 1585 (Tenshō 13), during Toyotomi Hideyoshi's Shikoku Campaign, the western army under Kobayakawa Takakage invaded Iyo. The Kono clan's head, Kono Michimao, eventually surrendered after resistance, and Yuzuki Castle was surrendered. The Kono clan thus lost their position as rulers of Iyo. Subsequently, Iyo's rule passed through Kobayakawa Takakage, Fukushima Masanori, and Katō Yoshiaki in succession. In 1587 (Tenshō 15), when Fukushima Masanori, the castle's new lord, relocated his residence to Kokubusan Castle, Yuzuki Castle was abandoned.
Today, Dogo Park preserves the castle's outer and inner moats and earthen ramparts in a remarkably intact condition—a rare example of medieval castle structures. Numerous artifacts excavated here, including ceramics, iron implements, and copper coins, are displayed in the Iyo History Museum (within the castle grounds). Many visitors combine a visit to the adjacent Dogo Onsen Honkan (built in 1894, designated as an Important Cultural Property), and together with Matsuyama Castle and Dogo Onsen, they form Matsuyama's historic heritage corridor.
Connection to Swords
The connection between Yuzuki Castle and Japanese swords can be found in Iyo Province's sword-making traditions and the Kono clan's naval culture as a crossroads for sword makers and sword distribution through the Seto Inland Sea. Records of sword makers from Iyo Province's Koto period are scarce, with few organized records of sword production surviving. The sword-making culture of the Kinai region, including the Rai school from Yamashiro (Kyoto), influenced western Japan through the Seto Inland Sea. Around Yuzuki Castle, the Kono clan's main base, records indicate that medieval sword makers lived in the castle-town smithy settlement and crafted swords for feudal lords and samurai. Excavations have also unearthed numerous iron slag and iron implements. As the leader of the Seto Inland Sea naval forces, the Kono clan played a crucial role in the distribution of swords and weapons. The Kono clan's navy, which controlled maritime routes across the Seto Inland Sea, managed trade connections with the continent, Kyushu, the Sanyo region, and the Kinai, serving as a relay point bringing renowned swords from Bizen (Okayama) and Yamashiro (Kyoto) to Iyo. Below the castle, Dogo Onsen had been a destination for imperial family members, nobles, and feudal lords since the Heian period, and it also served as a cultural meeting place where samurai from various provinces would visit bearing famous swords. Furthermore, a branch of the Kono clan, the Kurushima Navy (Kurushima Suigun), later became an independent force, and the place name Kurushima connects to the designation of Kurushima Jin'ya mentioned later. During the era when Yuzuki Castle was the Kono clan's main base, clan members including Kurushima Michitosa, based in Kurushima, served as naval commanders, and the swords they carried exemplified the excellence of Iyo's samurai culture. After Hideyoshi's Shikoku Campaign, when the Kono clan declined, Iyo's sword-making culture was inherited by the Matsuyama domain (under the Katō and Matsudaira families). Today, the remains of Yuzuki Castle stand as a precious legacy preserving memories of medieval Iyo's samurai culture and sword-making traditions for the present day.
Highlights
- Double Moats and Ramparts — The outer and inner moats and earthen ramparts remain nearly intact, offering one of Japan's finest examples of medieval castle layouts to experience firsthand
- Reconstructed Samurai Residence — A samurai dwelling reconstructed based on excavation findings, vividly recreating the living spaces of the period's warriors
- Iyo History Museum — Displays medieval artifacts excavated within the castle, including ceramics, iron implements, and copper coins, with explanations of Kono clan history
- Dogo Onsen Honkan (Adjacent) — An Important Cultural Property built in 1894, often visited together with the castle ruins as a standard historic walking tour
- Japan's 100 Famous Castles — Selected in 2000, recognized as a representative medieval castle of Shikoku, drawing castle enthusiasts from across Japan
- Coordinated Tourism with Matsuyama Castle — Part of Matsuyama's historic castle town heritage corridor, often visited in combination with Matsuyama Castle (one of Japan's 12 surviving original donjons) in the city center
* Opening hours and admission fees are subject to change. Please check the official website before visiting.