Takatenjin Castle was a yamashiro-style fortress from Japan's Sengoku period, situated in the Kamihijikata and Shimohijikata districts of Kakegawa, Shizuoka Prefecture. Designated a National Historic Site in 1975, with an expanded protected area in 2007, its ruins remain a significant historical landmark.
The castle stood on Mount Kakuo, a 200-meter-high mountain with steep cliffs, accessible only via a narrow path. Strategically important, it was considered the "key" to controlling Totomi Province and the nearby Tokaido highway, which lies 11 kilometers to the south. The castle's layout formed a "Z" shape, spanning the eastern and western peaks of the mountain, with a saddle-like ridge connecting the two. The eastern peak contained the original fortifications, including the inner bailey, while the western peak was added later by the Takeda clan. The castle was surrounded by terraces, dry moats, and earthen ramparts. Despite lacking stone walls, its steep terrain made it nearly impregnable.
The exact origins of Takatenjin Castle are uncertain, but it is believed to have been built by the Kushima clan in the 15th century. The Kushima were retainers of the Imagawa clan, but were eventually suppressed after siding against Imagawa Yoshimoto in an internal struggle. Yoshimoto later gave the castle to the Ogasawara clan. During the Battle of Anegawa in 1570, Tokugawa Ieyasu controlled the castle, leaving Ogasawara Nagatada as its castellan.
In 1571, Takeda Shingen besieged Takatenjin Castle with 20,000 troops but failed to capture it. Three years later, in the Siege of Takatenjin (1574), Takeda Katsuyori succeeded where his father had not, capturing the castle and earning great prestige. However, the victory was short-lived as the Takeda suffered heavy losses the following year to the Oda-Tokugawa alliance. By 1580, unable to maintain supply lines to the castle, Tokugawa Ieyasu decided to isolate it rather than attack directly. The defenders, running out of supplies, made a desperate attempt to break the siege in March 1581, led by their commander Okabe Motonobu. All 700 men were killed, and the castle was abandoned soon after.
Today, the city of Kakegawa preserves the castle ruins, with several hiking trails leading up the mountain. The summit hosts a Shinto shrine and monuments honoring the war dead from the Satsuma Rebellion and the First Sino-Japanese War. A faux tenshu (main keep) built before World War II was destroyed by lightning, leaving only a concrete foundation behind.
See also
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Nadzima Castle
It is believed that the first structures on this site were built by Tachibana Akitoshi (?-1568), head of the Tachibana clan, a branch family of the Ōtomo clan, as auxiliary fortifications for Tachibanayama Castle. In 1587, Toyotomi Hideyoshi established control over the island of Kyushu and granted Chikuzen Province to Kobayakawa Takakage, one of the leading vassals of the Mori clan. Takakage began construction of a new castle on the site of the existing fortifications in 1588. The exact date of completion is unknown, but by the time the invasion of Korea began in 1592, the castle had already been finished, as records note that Toyotomi Hideyoshi stayed there overnight on his way to Hizen Nagoya Castle, which served as the headquarters of the invasion forces.
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Kubota Castle
The founder of the castle is considered to be Satake Yoshinobu (1570–1633). Yoshinobu was one of the six great generals of Toyotomi Hideyoshi. During the Odawara Campaign of 1590, he took part in the siege of Oshi Castle under the command of Ishida Mitsunari, with whom Yoshinobu developed a good relationship.
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Kavanhoe Castle
Kawanoe Castle is located on the small Wasi-yama hill near the port area of the Kawanoe district in the city of Shikokuchuo, occupying a central position along the northern coast of Shikoku Island. Kawanoe was also known as Butsuden Castle. The term “butsuden” in Japan refers to temple halls, and for this reason it is believed that a Buddhist temple once stood on the site before the castle was built. Due to its location at the junction of four provinces on Shikoku Island, Kawanoe held significant strategic importance and was repeatedly targeted by rival forces seeking military control over the region.
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Yokote Castle
The founder of the castle is considered to be the Onodera clan. The Onodera were originally a minor clan from Shimotsuke Province and served Minamoto no Yoritomo (1147–1199), the founder of the first shogunate. The Onodera distinguished themselves in battle against the Fujiwara clan of the Ōshū branch and were rewarded with lands around Yokote. Around the 14th century, the Onodera moved to Yokote as their permanent residence. Their original stronghold was Numadate Castle, but after a series of clashes with the powerful Nambu clan, they relocated their base to the site of present-day Yokote Castle. It was likely during this time that the first fortifications appeared at the castle.
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Wakayama Castle
Wakayama Castle was built in 1585, when Toyotomi Hideyoshi ordered his uterine brother, Hashiba (Toyotomi) Hidenaga, to construct a castle on the site of the recently captured Ota Castle. The purpose of this construction was to secure control over the likewise newly conquered Province of Kii. Following an already established tradition, Hidenaga entrusted the project to his castle-building expert, Todo Takatora. Takatora carefully inspected the future castle site, personally drew up several designs, created a model of the planned castle, and took part in the work of laying out the grounds (nawabari). For the construction he brought in more than 10,000 workers and completed the large-scale project within a single year, which was considered extremely fast by the standards of the time.
Toyama Castle
Toyama Castle is located almost in the very center of the former province of Etchū and is surrounded by a wide plain with a large number of rivers. The very first castle on the banks of the Jinzu River was built in 1543 by Jimbo Nagamoto. The Jimbo clan were vassals of the Hatakeyama clan and governed the western part of Etchū Province. The eastern part of the province belonged to their rivals, the Shiina clan, who were also Hatakeyama vassals. Beginning in the 15th century, the influence of the ancient Hatakeyama clan gradually weakened, and as a result, the Jimbo and the Shiina fought constant wars for control of the province. Meanwhile, the forces of the Ikkō-ikki movement periodically intervened, helping first one side and then the other.
Takada Castle
During the Sengoku period, the lands where Takada Castle would later be built were part of Echigo Province and were controlled by the Uesugi clan.
Kishiwada Castle
The celebrated 14th-century military commander Kusunoki Masashige (1294–1336), who owned extensive lands south of what is now the city of Osaka, ordered one of his vassals, Kishiwada Osamu, to build a fortified residence. This order was carried out around 1336. These fortifications became the first structures on the site of what would later become Kishiwada Castle. From the beginning, the castle stood in a strategically important location—roughly halfway between the cities of Wakayama and Osaka, south of the key port of Sakai. Because of this position, it changed hands several times during periods of warfare.
