A manhole cover at Aoba Castle

A manhole cover at Aoba Castle (Sendai Castle), Sendai, Miyagi Prefecture. It shows waki-yagura, the watchtower of the main gate of the castle.
A manhole cover at Aoba Castle (Sendai Castle), Sendai, Miyagi Prefecture. It shows waki-yagura, the watchtower of the main gate of the castle.