is a

Japanese castle are fortresses constructed primarily of wood and stone. They evolved from the wooden stockades of earlier centuries, and came into their best-known form in the 16th century. Castles in Japan were built to guard important or strategic sites, such ...

located in Ōsuka in the southern part of what is now the city of

Kakegawa, Shizuoka is a city in western Shizuoka Prefecture, Japan. , the city had an estimated population of 117,925 in 45,519 households. The total area of the city is . Geography Kakegawa is in the coastal plains of southwest Shizuoka Prefecture. It is border ...

Japan Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the north ...

. It was built in the

Sengoku period The was a period in History of Japan, Japanese history of near-constant civil war and social upheaval from 1467 to 1615. The Sengoku period was initiated by the Ōnin War in 1467 which collapsed the Feudalism, feudal system of Japan under the ...

and was the capital of

Yokosuka Domain was a feudal domain under the Tokugawa shogunate of Edo period Japan, located in Tōtōmi Province. It was centered at Yokosuka Castle in what is now the Matsuo district of the city of Kakegawa in Shizuoka Prefecture.Tokugawa shogunate The Tokugawa shogunate (, Japanese 徳川幕府 ''Tokugawa bakufu''), also known as the , was the military government of Japan during the Edo period from 1603 to 1868. Nussbaum, Louis-Frédéric. (2005)"''Tokugawa-jidai''"in ''Japan Encyclopedia ...

Edo period The or is the period between 1603 and 1867 in the history of Japan, when Japan was under the rule of the Tokugawa shogunate and the country's 300 regional '' daimyo''. Emerging from the chaos of the Sengoku period, the Edo period was characteriz ...

Japan. In 1981, the castle ruins were designated as a National Historic Site.

History

During the

Muromachi period The is a division of Japanese history running from approximately 1336 to 1573. The period marks the governance of the Muromachi or Ashikaga shogunate (''Muromachi bakufu'' or ''Ashikaga bakufu''), which was officially established in 1338 by t ...

, the

Imagawa clan was a Japanese samurai clan that claimed descent from the Seiwa Genji by way of the Kawachi Genji. It was a branch of the Minamoto clan by the Ashikaga clan. Origins Ashikaga Kuniuji, grandson of Ashikaga Yoshiuji, established himself in the ...

ruled Suruga and

Tōtōmi Province was a province of Japan in the area of Japan that is today western Shizuoka Prefecture. Nussbaum, Louis-Frédéric. (2005). "''Tōtōmi''" in . Tōtōmi bordered on Mikawa, Suruga and Shinano Provinces. Its abbreviated form name was . The or ...

s from their base at Sunpu (modern-day

Shizuoka City is the capital city of Shizuoka Prefecture, Japan, and the prefecture's second-largest city in both population and area. It has been populated since prehistoric times. the city had an estimated population of 690,881 in 106,087 households, and ...

). After

Imagawa Yoshimoto was a pre-eminent ''daimyō'' (feudal lord) in the Sengoku period Japan. Based in Suruga Province, he was known as . he was one of the three ''daimyōs'' that dominated the Tōkaidō region. He died in 1560 while marching to Kyoto to become ...

was defeated at the

Battle of Okehazama The took place in June 1560 in Owari Province, located in today's Aichi Prefecture. In this battle, the heavily outnumbered Oda clan troops commanded by Oda Nobunaga defeated Imagawa Yoshimoto and established himself as one of the front-running ...

, Tōtōmi Province became a contested territory between

Tokugawa Ieyasu was the founder and first ''shōgun'' of the Tokugawa Shogunate of Japan, which ruled Japan from 1603 until the Meiji Restoration in 1868. He was one of the three "Great Unifiers" of Japan, along with his former lord Oda Nobunaga and fellow ...

from neighboring

Mikawa Province was an old province in the area that today forms the eastern half of Aichi Prefecture. Nussbaum, Louis-Frédéric. (2005). "''Mikawa''" in . Its abbreviated form name was . Mikawa bordered on Owari, Mino, Shinano, and Tōtōmi Provinces. Mik ...

and

Takeda Katsuyori was a Japanese ''daimyō'' of the Sengoku period, who was famed as the head of the Takeda clan and the successor to the legendary warlord Takeda Shingen. He was son in law of Hojo Ujiyasu. Early life He was the son of Shingen by the daughter ...

from Kai province. Takeda Katsuyori established himself at the former Imagawa stronghold of

Takatenjin Castle was a Sengoku period ''yamashiro''-style Japanese castle located in the Kamihijikata and Shimohijikata neighborhoods of the city of Kakegawa, Shizuoka prefecture. The ruins have been protected as a National Historic Site since 1975, with the area ...

and resisted all efforts by the Tokugawa armies to dislodge him. Tokugawa Ieyasu therefore ordered that a series of castles be built to block off all access to Takatenjin Castle and thus starve the defenders into submission. One of these castles was Yokosuka Castle, which was built by Ieyasu's retainer Ōsuga Yasutaka in 1580. After Takatenjinn Castle fell in 1581 it was abandoned, and Yokosuka Castle grew in importance as a regional administrative center. Following the establishment of the Tokugawa shogunate, the castle was expanded and modernized with water moats connecting to the sea and stone facing on its formerly earthen ramparts. Yokosuka Castle was noteworthy in that it used rounded boulders from the

Tenryū River The is a river in central Honshū, Japan. With a length of , it is Japan's ninth longest river. Its source is Lake Suwa in the Kiso Mountains near Okaya, Nagano, Okaya in Nagano Prefecture. It then flows through Aichi Prefecture and western Shi ...

in the walls of its moats, instead of cut stone. The ''

tenshu is an architectural typology found in Japanese castle complexes. They are easily identifiable as the highest tower within the castle. Common translations of ''tenshu'' include keep, main keep, or ''donjon''. ''Tenshu'' are characterized as ty ...

'' was a four-story, three-roof structure. The castle passed through a number of ''

fudai daimyō was a class of ''daimyō'' (大名) in the Tokugawa Shogunate (徳川幕府) of Japan who were hereditary vassals of the Tokugawa before the Battle of Sekigahara. ''Fudai daimyō'' and their descendants filled the ranks of the Tokugawa admini ...

'' clans before coming under the control of the

Nishio clan was a Japanese samurai kin group. Papinot, Jacques Edmond Joseph. (1906). ''Dictionnaire d’histoire et de géographie du Japon''; Papinot, (2003)"Nishio," ''Nobiliare du Japon'', p. 42 retrieved 2013-5-5. History The clan claims descent from ...

in 1682, under whose control it remained until the

Meiji Restoration The , referred to at the time as the , and also known as the Meiji Renovation, Revolution, Regeneration, Reform, or Renewal, was a political event that restored practical imperial rule to Japan in 1868 under Emperor Meiji. Although there were ...

in 1868. The keep was destroyed in an earthquake in 1707, and was not rebuilt. Following the

Meiji restoration The , referred to at the time as the , and also known as the Meiji Renovation, Revolution, Regeneration, Reform, or Renewal, was a political event that restored practical imperial rule to Japan in 1868 under Emperor Meiji. Although there were ...

, all remaining building were destroyed except for one gate from the Ni-no-maru Bailey which was preserved at the temple of Senyō-ji in Yokosuka, a portion of the ''

daimyō were powerful Japanese magnates, feudal lords who, from the 10th century to the early Meiji era, Meiji period in the middle 19th century, ruled most of Japan from their vast, hereditary land holdings. They were subordinate to the shogun and n ...

's'' palace, which was transferred to the temple of Yusan-ji nearby

Fukuroi 270px, Shizuoka Stadium is a city located in Shizuoka Prefecture, Japan. , the city had an estimated population of 88,395 in 34,842 households, and a population density of 820 persons per km². The total area of the city was . Fukuroi is a me ...

city. Today, a portion of the moats and earthen walls remain, and a local history museum has been built within the site of the former main bailey.

History

Notes

See also