The Sanyōdō highway, which connects the Kinai region with Kyushu, ran to the north of the modern city center, and Tomonoura, a port on the Seto Inland Sea from the Heian period, was to the south.

[4] Katsunari had an outstanding military record and it was expected that he would act as a bulwark on the Sanyōdō highway against possible rebellion by the powerful tozama daimyō of western Japan, such as the Mōri clan.

Although the various Abe daimyō played important political roles in the administration of the shogunate, they seldom visited the domain in person.

Much of outer areas of the castle grounds disappeared due to the construction of railways and urban development.

[6] Fukuyama Station was built directly adjacent to the inner bailey of the castle and the tenshu can be seen clearly from its platforms.

In 1950, the surviving Fushimi Yagura and Sugitetsu Gomon were designated National Important Cultural Properties.