This is a Japanese castle in Otemachi, Aizuwakamatsu City. Locally it is called Tsurugajo Castle. The castle was the seat of famous feudal warlords but was damaged in the Boshin Civil War at the end of the Edo period and demolished in 1874. It was rebuilt in 1965, and in 2011 the roof tiles were reverted to the original red resembling the time of the end of Tokugawa Shogunate. It is the only castle in Japan where visitors can see the elegant red tiled keep. In addition, the castle tower also acts as a museum focusing on the Boshin War, exhibiting helmets, weapons, materials, etc. of successive castle owners. Around the castle tower is also a cherry blossom viewing area and many visitors come to visit in the spring.