* Image is for illustrative purposes only.Nobeoka Castle
延岡城
Nobeoka Castle is a historic castle in Kyūshū dating from the Built in 1603 (Keichō 8), whose lord was Arima Naozumi.
Overview
About the Castle
Nobeoka Castle was built in 1603 (Keichō 8) by Takahashi Motosane on a plateau (Castle Mountain) surrounded by the Gokase and Ōse Rivers. It is a flat-topped mountain castle with solid fortifications featuring a three-story tower serving as a substitute for the main keep, and functioned as the political center of Nobeoka's 50,000-koku domain. The Arima family descended from the Christian daimyō Arima Harunobu, and the complex historical background of the Arima family is deeply reflected in Hyūga Nobeoka. From the mid-Edo period onward, the Makino and Naitō families served as lords, remaining the seat of domain administration until the end of the Edo period.
The Arima Family and the Shadow of Christianity
Arima Harunobu was known as a Christian daimyō and was closely connected to Kyushu Christian daimyō who sent a boy envoy to Rome in 1582 (Tenshō 10). The Arima family's transfer from Hizen to Hyūga reflected their complex political position, which became a remote cause of the Shimabara Rebellion. Naozumi chose to abandon Christianity and serve the Tokugawa, yet traces of the Arima family's Christian culture remain in Nobeoka. Legend holds that Nobeoka Castle's stone walls contain embedded "Christian lanterns"—stones reused from Christian gravestones—transmitting the hidden history of faith during the persecution era.
The Thousand-Man Killer Stone Wall
Nobeoka Castle's greatest attraction is the massive stone wall on the east side of the main enclosure, called the "Thousand-Man Killer Stone Wall." This wall, reaching approximately 19 meters in height, carries the legend that if enemies attacked and the topmost stones were removed, the entire stone wall would collapse, capable of killing even a thousand attacking soldiers. Regardless of the truth of this mechanism, the stone-masonry technique of Nobeoka Castle's walls is genuine and is noted by researchers as historically precious in the technical history of stonework, demonstrating the transition from nozura-zumi (rough field-stone facing) to uchikomi-hagi (fitted ashlar) construction.
The Naitō Family and Cultural Promotion
The Naitō family, who served as lords of Nobeoka Domain from the mid-Edo period until the end of the Edo period, were daimyō of cultural refinement who dedicated themselves to promoting learning and martial arts within the domain. The Naitō family was a lineage that served as senior councilor to the bakufu, maintaining strong ties to the central government while elevating Nobeoka's cultural standards. At the han school "Kōgyōkan," martial arts and learning were taught, and talented individuals from Nobeoka distinguished themselves in various fields during the late Edo and Meiji periods.
The Swordcraft Culture of Southern Kyushu
Hyūga, where Nobeoka is located, occupies a unique position within the martial culture of southern Kyushu. The warriors of Hyūga, while influenced by the Shimazu clan, maintained their own martial culture and mastered practical swordcraft heavily influenced by Jigen-ryū and Yagyu Jikkenryū. Although Nobeoka is known in modern times as a chemical industry city, the stone walls of Castle Mountain and the landscape of the Gokase River vividly convey the memory of the samurai castle town of old.
Connection to Swords
Nobeoka Castle's sword culture was composed of two distinctive elements: the fierce martial culture of southern Kyūshū and the Christian background of the Arima family. Arima Harunobu, the father of Arima Naoumi, was known as a Christian daimyō and through Portuguese and Spanish vessels had been exposed to European weapon culture. It is noted that Harunobu's weapons collection possibly included Western swords and short swords. The Arima family's sword fittings sometimes incorporated Christian designs, and as "Kirishitan tsuba" and "Nanban tsuba" they are recognized as possessing special value in the world of modern sword-fitting collections. Hyūga Province, to which Nobeoka belonged, fell within the sphere of influence of southern Kyūshū's swordsmanship culture, and the influence of Jigen-ryū (Satsuma Province) and Yakumarujikoken-ryū (lower-ranking samurai of Satsuma Province) extended to Hyūga as well. Jigen-ryū is a swordsmanship characterized by powerful diagonal slashes delivered from the "dragonfly stance," and represents the quintessential practical swordsmanship mastered by samurai of Kagoshima and Miyazaki. Samurai of Nobeoka required swords to be sturdy and practical, suited to this powerful one-strike-killing swordsmanship. From the middle Edo period onwards, under the administration of the Naitō family, the practical use of swords was encouraged through sword practice at the clan school "Kōgyōkan." Though Nobeoka Castle's tenshu no longer stands, the castle-hill stonework—particularly the "Thousand-man Killer Stonework"—still possesses overwhelming power to impress visitors. The Nobeoka City History Museum displays swords and armor connected to both the Arima and Naitō families, demonstrating the unique historical position of this region where southern Kyūshū's swordsmanship culture and Christian weapon culture intersected.
Highlights
- Sennin-goroshi stone wall — the legendary 17-meter 'Thousand-Man Killer' defensive wall
- Shiroyama Park (Nobeoka Castle ruins) — hilltop ruins with views over the Gokase River
- Nobeoka City Naitō Memorial Museum — Naitō family swords, armor, and historical artifacts
- Takachiho Gorge — mythological landscape, about 1 hour by car from Nobeoka
- Kaiganzan Kiyomizudera Temple — ancient temple linked to the Arima family history
* Opening hours and admission fees are subject to change. Please check the official website before visiting.