Hiroshima Castle, sometimes called Carp Castle, was a castle in Hiroshima, Japan that was the home of the daimyō of the Hiroshima han (fief). The castle was constructed in the 1590s, but was destroyed by the atomic bombing on August 6, 1945. It was rebuilt in 1958, a replica of the original that now serves as a museum of Hiroshima's history before World War II.