Adjoined 連結式

The main keep is connected to a smaller tower or yagura by a watari-yagura. I picked Matsumoto Castle below as one example of a renketsushiki main keep, but actually Matsumoto Castle exemplifies both Fukugoshiki and Renketsushiki. The Inui Kotenshu is connected by a watari yagura, makiing it renketsushiki, but the Tatsumi Tsuki-yagura on the opposite side is connected directly to teh castle making it fukugoshiki.
donjon
Nagoya Castle Kumamoto Castle Matsumoto Castle

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