Ueda Castle was built by the warlord Sanada Masayuki during the Warring States period and is famous as the site of the "Ueda Battle," where the Tokugawa army was repelled twice. The former second bailey has been developed into Ueda Castle Ruins Park, where structures such as the tower gate and walls have been restored. Inside the park, there are still remnants from that time, such as devices for throwing stones and holes for shooting guns at enemies, so history buffs should definitely stop by and feel the atmosphere of the past.
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