Fukuyama Castle is built on a low hill upon three levels of stone walls, and its three-tiered construction, named Hitomi-dan, was considered an ideal military strategy back in the Edo period. Most of the original stone walls remain to this day.

The animals are formed from the stone walls and the flowers that bloom and die in a continuous cycle. When people touch the animals, the petals scatter. If people continue to touch them, the petals of the animals will scatter, and the animals will die and fade away.