Numata Castle, located in Numata, northern Gunma Prefecture, Japan, has a rich and complex history. During the late Edo period, it served as the residence of the Toki clan, who ruled the Numata Domain. Over the centuries, the castle changed hands multiple times and was the site of significant battles during the Sengoku period.
Origins and Sengoku Period Conflicts
The Numata clan originally controlled the region, with Numata Akiyasu constructing a fortress on the site in 1532. However, in 1580, Sanada Masayuki, a vassal of Takeda Katsuyori, seized the castle. The Numata clan attempted to reclaim their stronghold the following year but suffered devastating losses.
The castle then became a focal point of conflict between the Sanada clan and the Odawara Hōjō clan. In 1589, Toyotomi Hideyoshi sought to mediate the dispute by awarding Numata Castle to the Hōjō and granting nearby Nagurumi Castle to the Sanada. However, Hōjō castellan Inomata Kuninori rejected the settlement and launched an attack on the Sanada. After the fall of the Hōjō at the Battle of Odawara in 1590, the Sanada regained undisputed control over Numata.
Expansion and the Edo Period
In 1597, Sanada Nobuyuki undertook an ambitious reconstruction of Numata Castle, expanding its defenses with stone walls, a grand five-story donjon, and multiple three-story yagura (watchtowers). In 1656, Numata became a separate domain from the Sanada stronghold at Ueda Castle. However, in 1681, Sanada Nobutoshi was dispossessed by the Tokugawa shogunate due to financial misrepresentation, leading to the castle’s destruction.
The domain was later reinstated in 1703 and awarded to Honda Masanaga, who partially rebuilt Numata Castle. While some moats and earthen embankments were restored, neither a new donjon nor yagura were constructed. The castle later came under the rule of the Kuroda clan before being transferred to the Toki clan in 1742. From this period onward, the ruling families resided in a residence within the castle’s third bailey, and the site functioned more as a jin’ya (administrative headquarters) than a military fortress.
Preservation and Legacy
In 1912, Kume Tamenosuke, a former samurai of the Toki clan, purchased the castle site. He later donated it to the town of Numata in 1926, transforming it into a public park. Today, the park features the Ubukata House, an Edo-period structure that once served as a pharmacy in the Numata castle town. Designated as an Important Cultural Property, it now operates as a local history museum, showcasing artifacts, including a scale model of Numata Castle during the Sanada era.
Recognizing its historical significance, Numata Castle was included in the Continued Top 100 Japanese Castles list in 2017. Although little remains of the original structure, its legacy endures as a testament to the region’s turbulent past and the shifting power dynamics of feudal Japan.
See also
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Kanazawa Castle
Construction of Kanazawa Castle began in 1580 on the orders of Sakuma Morimasa, a vassal of Oda Nobunaga. The castle was built on the site of the Ikko-ikki sect's Oyama Gobo temple, which is why it is sometimes called Oyama Castle. Morimasa managed to build several moats and begin construction of a castle town. However, after his defeat at the Battle of Shizugatake in 1583, he was executed, and ownership of the castle passed to Maeda Toshiie (1538–1599).
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Nakatsu Castle
Kuroda Yoshitaka (1546–1604) was one of the closest advisors to the legendary military commander Toyotomi Hideyoshi. He took part in key military campaigns of the late 16th century, including the campaign against Shikoku in 1585 and the campaign against Kyushu in 1587. Later, during the second campaign in Korea, Yoshitaka served as chief advisor to the commander of the invasion forces, Kobayakawa Hideaki. After Hideyoshi's death, he swore allegiance to Tokugawa Ieyasu, thereby securing his influence and patronage under Japan's new leader.
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Edo Castle
The history of Edo Castle dates back to the Heian period, when the Edo clan built a small fort on this site. In 1457, the vassal of the Uesugi clan, Ota Dokan (1432–1486), constructed a full-scale castle here. Internal conflicts weakened the Uesugi clan, and in 1524, Ota Dokan’s grandson, Ota Yasutaka, surrendered the castle without resistance to the forces of Hojo Soun, the ambitious leader of the Hojo clan. While Odawara Castle remained the clan's main stronghold, Edo was considered a key strategic fortress.
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Samurai Museum Shinjuku
Situated in the vibrant district of Shinjuku, the museum showcases an extensive collection of samurai armor, weapons, and cultural artifacts spanning from the Kamakura to the Edo period. The exhibits aim to convey the samurai's unwavering commitment to honor and discipline, reflecting how their spirit continues to influence modern Japanese culture.
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Anjo Castle
Anjo Castle was built on a slight elevation at the edge of the Hekikai Plateau, about 2 kilometers southeast of present-day central Anjo City in Aichi Prefecture. Today, the surrounding area thrives on large-scale agriculture and automotive manufacturing, utilizing the expansive flatlands and its proximity to the Nagoya region.
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Iwabitsu Castle
Iwabitsu Castle is a yamashiro-style (mountain) castle located atop Mount Iwabitsu in Higashiagatsuma, Gunma Prefecture, Japan. Recognized for its historical significance, its ruins have been protected as a National Historic Site since 2019.
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Tsutsujigasaki Castle
Tsutsujigasaki Castle (Tsutsujigasaki Yakata) served as the fortified residence of the last three generations of the Takeda clan and is located in the heart of Kofu, Yamanashi Prefecture, Japan. Unlike traditional Japanese castles, it was not referred to as a "castle" in Japanese, as the Takeda clan famously believed in relying on their warriors as their true fortifications, stating, "Make men your castle, men your walls, men your moats." Designated a National Historic Site in 1938, the ruins are now open to the public and house the Takeda Shrine, a Shinto shrine dedicated to the deified spirits of the Takeda clan.
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Nagoya Castle
Nagoya Castle, originally built by the Owari Domain in 1612 during the Edo period, stands on the site of an earlier Oda clan castle from the Sengoku period. It became the centerpiece of Nagoya-juku, a significant castle town on the Minoji road, which connected two major Edo Five Routes: the Tokaido and the Nakasendo. In 1930, ownership of the castle was transferred to the city by the Imperial Household Ministry, establishing it as the focal point of modern Nagoya. Although partially destroyed in the Pacific War in 1945, the castle has undergone continuous restoration and preservation efforts since 1957.
