|Aizuwakamatsu, Fukushima Prefecture, Japan|
The reconstructed tenshu (keep)
|Type||Hirayamashiro (hilltop castle)|
|Condition||The tenshu was reconstructed using concrete in 1965.|
|Built by||Ashina Naomori|
|In use||1384 to 1868|
Aizu-Wakamatsu Castle (会津若松城 Aizu-Wakamatsu-jō?), also known as Tsuruga Castle (鶴ヶ城 Tsuru-ga-jō) is a concrete replica of a traditional Japanese castle in northern Japan, at the center of the city of Aizuwakamatsu, in Fukushima Prefecture.
Date Masamune, the greatest warlord of the Tōhoku area, had struggled against the Ashina clan for years, and finally captured the castle in 1589 at the Siege of Kurokawa Castle. But soon he submitted to Toyotomi Hideyoshi and gave it up in 1590.
In 1592 a new lord, Gamō Ujisato, redesigned the castle and gave it the name Tsuruga Castle, although the populace also referred to it as Aizu Castle or Wakamatsu Castle.
During the Edo period, it was the seat of the daimyō of the Aizu Han. The founder was Hoshina Masayuki, the son of shōgun Tokugawa Hidetada and the grandson of Ieyasu. He and his successors bore the Matsudaira name. The castle was an important Tokugawa stronghold in the Tōhoku region of Honshū.
The castle was besieged in the Battle of Aizu by the forces of the newly formed Imperial army in 1868 during the Boshin War. After a month of isolated defence, Matsudaira Katamori surrendered. The castle buildings, pockmarked by artillery during the siege and structurally unstable, were demolished by the new government in 1874.
The tenshu, the largest tower of the castle, was reconstructed in 1965 in concrete. Currently there is a museum inside, and an observation gallery on top with panoramic views of the city.
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