Also known as: Itami Castle (伊丹城)

A flatland castle constructed by the Itami Clan during the Northern and Southern Courts period (1336 - 1392) and renovated in 1475, Itami Castle contained the oldest castle keep in Japan. It fell in 1574 to Araki Murashige, who changed its name to Arioka Castle and greatly expanded it into one of the largest castles in the region.

However, when Murashige later rebelled against Oda, Oda laid siege to the castle and took it in 1579. His general Ikeda Motosuke demolished it. Today its ruins are located just in front of Itami Station.