Ako: Castle of the 47 Samurai

Built on an expansive flat area originally beside the sea, Ako Castle was completed in 1648. It was home to the feudal lord, Naganori Asano, whose death was avenged by 47 of his samurai - one of Japan's most famous stories. Although a donjon (keep) was never built, many stone walls remain and other buildings have been reconstructed. The area is now a beautiful park, especially during cherry blossom season.