A castle—a tall, fortified building or complex built for defense and residence. Japanese castles often have keeps and stone walls.
京都には歴史的な城がいくつか残っている。
There are several historic castles remaining in Kyoto.
城の天守閣から町の景色を眺めた。
I viewed the town from the castle keep.
戦国時代には多くの城が築かれた。
Many castles were built during the Warring States period.