Tsurugajo Castle, Aizu-Wakamatsu
Tsurugajo is one of Tohoku's most striking castles — distinguished by its deep crimson-tiled roof, a restoration choice that honours the Aizu domain's fierce resistance to imperial forces during the 1868 Boshin War. The keep houses a superb museum on Aizu samurai culture and the tragic last stand that cemented the domain's reputation for loyalty and honour. Cherry blossoms transform the moat in April into one of Japan's most photogenic scenes.