Built in the 16th century by a feudal lord, Hiroshima Castle was a traditional seat of power in West Japan but was destroyed in the atomic bombing in 1945. Rebuilt in 1958, it now boasts an eye-catching concrete and wood exterior. The main keep, five stories tall, is surrounded by a moat and houses a museum dedicated to the history of the castle and the city. There are great vistas to be had from the top floor, as well as other reconstructed elements (and ruins) to explore such as a shrine, gates and turrets. The castle grounds are especially beautiful during sakura (cherry blossom) season.