Fushimi Turret, designated as a National Important Cultural Property, was relocated from Fushimi Castle in Kyoto, which was abandoned in 1619, the year before the construction of Fukuyama Castle began. Fushimi Castle was also the home of Ieyasu Tokugawa, the shogun who established the Edo Shogunate.

The turret was originally a building used for defense of the castle and for lookouts, and was also used as a warehouse to store armaments and daily necessities. Fushimi Turret is a large-scale turret with three tiers and three stories and building of high prestige on par with the towers of other castles.

At the end of World War II in 1945, the castle tower and many of its other building had been destroyed in air raids, but Fushimi Turret, along with Sujigane-Gomon Gate, survived the destruction. In 1954, the building was dismantled and repaired, and at that time, the inscription “Matsunomaru no Higashi Yakura” was found on a beam on the second floor, proving that it was relocated from Fushimi Castle. There are many buildings throughout Japan that are said to have been relocated from Fushimi Castle, but no other evidence has been found to confirm this.

Before it was relocated to Fukuyama, it was said to have been built between 1598 and 1602, and it can be said that it is among the oldest of the three-tier turrets existing in Japan today.

Before it was relocated to Fukuyama, it was said to have been built between 1598 and 1602, and it can be said that it is among the oldest of the three-tier turrets existing in Japan today.

Sujigane-Gomon Gate, designated as a National Important Cultural Property, is the main entrance to the inner citadel of Fukuyama Castle. There is a theory that, when Fukuyama Castle was being constructed between 1620 and 1622, it was relocated along with the adjacent Fushimi Turret, also an National Important Cultural Property, from Fushimi Castle in Kyoto. However, Unlike Fushimi Turret, there is no solid evidence of it having been moved.

It is a typical turrets gate with stone walls that flank the gate, and a turrets on the second floor that straddles the walls. A turrets gate such as this is a solid defensive gate that can be used to attack approaching enemies from above using guns or other projectile weapons. Thin strips of iron placed on the door provided further defensive power and also became the origin of the gate’s name.

The walls are adorned with horizontally placed wood known as "nageshi-gata", with the entire surface of the walls are coated with a flame-resistant plaster, and shares the same design as Fushimi Turret.

Many of the pillars, beams, and bundles on the second floor are made from materials that have been used in other buildings. It has also been noted that this gate may have been built by diverting materials intended for use in Kannabe and Tomo castles, both of which is said to have been nearby.

Fukuyama Castle was built by Katsunari Mizuno, first lord of the Fukuyama Domain, when he was assigned to this area, to fortify the defenses of western Japan. It was built between 1620 and 1622.

Mizuno was a cousin of Ieyasu Tokugawa, the shogun who established the Edo Shogunate. He was an unconventional person, who as a general would even lead charges into enemy lines on the field of battle. In western Japan, there were many former subordinates of the Toyotomi family who were enemies of the Tokugawa family, so he was entrusted with the important role of preventing rebellion in the area.

The difference in size between the first floor and the fifth floor of the castle towers is the smallest in the history of castle architecture. The top floor was made large by using the latest construction methods at the time so that it would stand out when viewed from a distance, while making the first floor smaller helped keep construction costs down.

Most of the buildings of the castle, including the tower, which was designated as a National Treasure, were destroyed in air raids at the end of World War II in 1945, but the tower, bathhouse, Tsukimi Turret, and Kagami Turret were rebuilt between 1966 and 1973. Today, the reconstructed castle tower serves as a museum that tells the history of Fukuyama City.

Fukuju Kaikan, a Registered Tangible Cultural Property, was built by Wasuke Anbe as a villa architecture in the early Showa period (1935-37). Abe made his fortune by developing the processed food product bonito flakes, which can be used to easily make fish stock, earning him the nickname "the Bonito Flake King". A warehouse for storing rice from neighboring Fukuyama Castle once stood where this building is now located.

In addition to the Japanese-style main building and tea room, there is also a two-story Western-style building. The Western-style building is adorned with decorative Venetian Renaissance-style pseudo-window decorations and pillars, which are characteristic of Western-style architecture in the early Showa Era (1926-1989).

It was requisitioned by American occupation forces following the end of World War II, but Noboru Shibuya, a businessman from Fukuyama, bought the property and donated it to the city.

The city used it for purposes such as a wedding hall, rental venue, official guesthouse, and office. Even today, the Japanese-style building is used for events such as tea ceremonies, lessons for Japanese musical instruments, and exhibitions of kimono and tea utensils.

The second floor of the Western-style building is used as a rental conference room, while the first floor is used as a coffee shop, making it a beloved location for people who want to relax and enjoy the garden.