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Osaka Castle is a prominent symbol of Osaka City, originally constructed in 1583 by Toyotomi Hideyoshi on the site of the Ishiyama Hongan-ji temple-fortress, which had been the scene of a violent uprising by warrior monks and peasants in the late 16th century. Modeled on Oda Nobunaga’s Azuchi Castle, the original Osaka Castle tenshu (tower keep) featured five visible floors, six interior floors, and two underground basements. The exterior was lacquered black and adorned with gold decorations, including large peony flowers, tigers, birds, and various crests.

The lavish use of gold on Osaka Castle’s exterior surpassed even the grandeur of Azuchi Castle. The shachihoko-gawara (roof decorations with a tiger’s head and a scaly fish’s body), other roofing tiles, and rounded eave edge tiles were all finished in gold leaf. Inside, pillars were lacquered red or black, and walls were beautifully decorated with gold leaf and paintings by leading artists of the time. Hideyoshi often conducted tours of the luxurious keep to enhance his power and authority.

After Hideyoshi’s death in 1598, construction of the castle continued until the entire structure, including the San-no-Maru and all the defensive elements like earthen walls, water moats, and dry moats, was completed. During the Winter Siege of Osaka in 1614, Sanada Yukimura built the Sanada-Maru, a vast defensive structure that greatly strengthened the southern end of Osaka.

Following Hideyoshi’s death, his five-year-old son, Hideyori, inherited the castle. However, the peace achieved by Hideyoshi was disrupted when Tokugawa Ieyasu, the leader of the Council of Regents established to assist Hideyori, made moves to seize power. This led to the nation being divided between the Tokugawa-led East and the Toyotomi-loyal West, culminating in the Battle of Sekigahara in 1600. Although the Tokugawa won, many daimyo remained loyal to the Toyotomi, prompting Ieyasu to launch the Winter Siege of Osaka in 1614. Despite being outnumbered, the Toyotomi forces held off the attack. However, in 1615, Ieyasu raised 150,000 samurai and laid siege to Osaka Castle again, eventually destroying it with artillery and fire, killing thousands of Toyotomi loyalists and ending the Toyotomi clan.

In 1620, the Tokugawa clan rebuilt Osaka Castle to erase any trace of the Toyotomi fortress. The moats were widened and deepened, and the stone walls were reconfigured to reach 30 meters in height. The tenshu was rebuilt about 45 meters west of the original keep, and a three-story watchtower was added. This new castle was partially destroyed in 1660 by an explosion and fire caused by lightning striking a gunpowder warehouse. The main donjon was destroyed by another lightning strike in 1665. Finally, the castle was attacked and burned during the Meiji Restoration in 1868.

The current ferro-concrete tower, reconstructed in 1931, blends old and new elements from different clans and periods. It was based on the shape of the Toyotomi castle but built in the white-walled, green-roofed style preferred by the Tokugawa clan, atop the remaining stone base from the 1620s. Thirteen original Tokugawa period structures remain and are designated as Important Cultural Assets. Notably, the stone walls of Osaka Castle have survived demolition, war, and earthquakes since their construction in the 1620s.

 


See also

  • Nagoya Castle

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    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.

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  • Matsushiro Castle

    Matsushiro_Castle.jpg

    Matsushiro Castle, originally known as Kaizu Castle, is located in what was once Matsushiro town, now part of Nagano City. The site is recognized as a National Historic Site of Japan. Situated on the northern Shinano flatlands between the Chikuma River and a former riverbed that serves as a natural outer moat to the north, the castle and its surrounding town were prone to flooding due to their location.

    Read more …

  • Fushimi Castle

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    Fushimi Castle, also known as Momoyama Castle or Fushimi-Momoyama Castle, is located in Fushimi Ward, Kyoto. Originally built by Toyotomi Hideyoshi between 1592 and 1594 as his retirement residence, the castle was destroyed by the 1596 Keichō–Fushimi earthquake and later rebuilt. However, it was demolished again in 1623, and its site now houses the tomb of Emperor Meiji. A replica of the castle was constructed nearby in 1964.

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  • Odawara Castle

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    Odawara Castle, located in the city of Odawara, Kanagawa Prefecture, Japan, is a reconstructed historical site with roots dating back to the Kamakura period (1185–1333). The current donjon (main keep) was rebuilt using reinforced concrete in 1960 on the stone foundation of the original structure, which was dismantled between 1870 and 1872 during the Meiji Restoration.

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  • Shinpu Castle

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    Shinpu Castle was a Japanese hirayama-style fortress from the Sengoku period, situated in what is now Nirasaki, Yamanashi Prefecture. It served as the main stronghold of warlord Takeda Katsuyori. Designated as a National Historic Site in 1973, the castle occupies a strategic position on a mountain with steep cliffs, overlooking the Kamanashi River to the west of Kofu, where Takeda Shingen’s Tsutsujigasaki Castle once stood.

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  • Takato Castle

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    Takato Castle, located in the city of Ina in southern Nagano Prefecture, Japan, was a notable stronghold during the Sengoku period. By the end of the Edo period, it was the residence of a cadet branch of the Naito clan, the daimyo of the Takato Domain. Also known as Kabuto Castle, it was originally constructed in the 16th century and is now mostly in ruins.

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  • Takatenjin Castle

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    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.

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  • Yoshida Castle

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    Yoshida Castle is renowned worldwide, particularly through the intricate woodblock prints by Edo Period artist Hiroshige. His famous series, depicting the 53 stages of the Tokaido—the historic route between Kyoto and Edo (modern-day Tokyo)—includes the 34th print, which shows workmen repairing a castle overlooking a wooden bridge crossing a wide river. This scene captures the Toyokawa River at Toyohashi in southeast Aichi Prefecture, and the castle is Yoshida Castle.

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