Hirosaki Park

Hirosaki Castle (弘前城, Hirosaki-jō) is a hirayama-style Japanese castle constructed in 1611. It was the seat of the Tsugaru clan, a 47,000 koku tozama daimyō clan who ruled over Hirosaki Domain, Mutsu Province, in what is now central Hirosaki, Aomori Prefecture, Japan. It was also referred to as Takaoka Castle (鷹岡城 or 高岡城, Takaoka-jō).

Hirosaki Domain (弘前藩, Hirosaki-han), also known as Tsugaru Domain (津軽藩, Tsugaru-han), was a tozama feudal domain of Edo period Japan It is located in Mutsu Province, in northern Honshū. The domain was centered at Hirosaki Castle, located in the center of what is now the city of Hirosaki in Aomori Prefecture.

Kuroishi Domain (黒石藩, Kuroishi-han) was a tozama feudal domain under the Tokugawa shogunate of Edo period Japan. It is located in northwestern Mutsu Province, Honshū. Its territory included 2000 koku in the area around present-day city of Kuroishi, 1000 koku in present-day Hiranani, and 2000 koku in what is now part of Ōta, Gunma.