Hiroshima castle is a typical flat castle that was constructed by Mouri Terumoto, who was one of the most significant servants ("Godairou") of Hideyoshi Toyotomi. Fukushima family and later Asano family lived there during the Edo era. This castle tower was designated as National Treasure in 1931 (Showa 6). It was destroyed by atomic bomb. Later, the exterior of the castle was renovated in 1958 (Showa 33). In 1989 (Heisei 1st), the inside was restored. Today, it has turned into a history museum featuring Samurai culture.