Bitchu Matsuyama Castle

Bitchu Matsuyama Castle: A Keep, a Turret and a Wall on Mount Gagyu

Bitchu Matsuyama Castle (備中松山城, Bitchū-Matsuyama-jō) is a mountaintop castle in Uchisange, Takahashi City, Okayama Prefecture, whose keep, two-story turret and a section of earthen wall, rebuilt between 1681 and 1683 in the mid-Edo period, were designated Important Cultural Properties of Japan in 1941.

The castle stands on Mount Gagyu, whose name means "reclining ox," a ridge of four summits that rises north of Takahashi's old town. The buildings that survive sit on the southern peak, Komatsuyama, at about 430 meters above sea level. Visitors climb to them on foot, which is part of what makes Bitchū-Matsuyama unusual: the city of Takahashi describes it as the only one of Japan's twelve castles with an original keep that is a true mountain castle.

A fortress has occupied this mountain since at least 1240, when a local steward named Akiba Saburō Shigenobu is said to have built a stronghold on the northern peak. The site controlled the route between the Sea of Japan coast and the Inland Sea side of western Honshu, and it changed hands repeatedly through the medieval and Warring States periods. During the Bitchū War of 1574 to 1575, the whole mountain was reportedly ringed with outlying forts.

What you see today dates from a later, more peaceful era. After the Battle of Sekigahara, the governors Kobori Masatsugu and his son Masakazu (better known as the tea master Kobori Enshū) began repairs. The Mizunoya family took over the domain in 1642, and in 1681 the second lord, Mizunoya Katsumune, launched a three-year rebuilding that gave Bitchu Matsuyama Castle the keep, turret and wall that stand now.

After the Meiji government ordered castles decommissioned in 1873, the buildings were left to decay on the summit for decades. The town of Takahashi repaired the turret in 1928, the keep was dismantled and rebuilt in 1939 and 1940, and the earthen wall was repaired in 1941.

Why Bitchu Matsuyama Castle Is an Important Cultural Property

On May 8, 1941, three structures of Bitchu Matsuyama Castle were designated Important Cultural Properties: the keep (Tenshu), the two-story turret known as the Nijū Yagura, and the Sannohira Yagura East Earthen Wall. The Agency for Cultural Affairs dates all three to the Tenna era rebuilding of 1681 to 1683. They are owned by the national government (Ministry of Education, Culture, Sports, Science and Technology) and managed by Takahashi City.

Most castles of the Edo period moved down to hills or plains, where they could double as administrative centers. Bitchu Matsuyama kept its main enclosure on a summit at about 430 meters. The castle grounds became a national Historic Site in 1956, and the Agency's description of that site calls a hilltop fortress rebuilt this late in history an extremely rare case.

Look beneath the buildings, too. According to Takahashi City, the 1681 rebuilding converted the structures into plastered, fire-resistant Edo-period architecture but kept almost unchanged the layout first laid out on Komatsuyama in 1331. The castle thus shows a medieval mountain fortress plan carrying a set of Edo-period buildings, all in one climb.

What to See at Bitchu Matsuyama Castle

The Keep: Small Building, High Base

The keep of Bitchu Matsuyama Castle has two roofs and two floors, stacked in the regular tower style, under clay tile. At about 11 meters tall, it is, according to Takahashi City, the lowest of Japan's surviving original keeps. It does not feel small when you stand in front of it after passing through the Honmaru South Gate. The builders carved the natural bedrock into a platform, raised a stone base (Ishigaki) on top and set the keep on that, so the whole mass sits well above you. A curved Noki-karahafu gable over the entrance also helps the proportions.

Old records call this building a "three-tier turret," and from outside it reads as three tiers, yet inside there are only two floors. The first floor has a sunken hearth about 180 centimeters long and 90 centimeters wide, used for cooking and heat during a siege, and a raised room, the Shōzoku no Ma, where the lord's family would stay if the castle were surrounded. Stones were packed under its floor so no one could creep in from below.

On the second floor is a small shrine altar installed by Mizunoya Katsumune in 1683. It once held three sacred swords along with ten deities, among them Amaterasu, to protect the domain. Look closely at the posts and beams and you can still pick out the marks of the adze and the spear plane, the old Japanese tools used to dress timber.

Originally the keep was entered by a covered corridor from the neighboring Hachi no Hira Yagura. During the major repair of 1940, the corridor was too badly decayed to restore and was detached, which is why the keep now stands on its own, a little different from its Edo-period appearance.

The Nijū Yagura: The Only Two-Story Turret

Behind the keep stands the Nijū Yagura, a turret of two stories. Its ground floor measures 7.9 by 5 meters and the ridge reaches 8.4 meters. The Irimoya-zukuri roof of Hongawarabuki tile carries a pair of shachi, the fish-shaped ridge ornaments, and plum-blossom Gegyo boards hang in the gables.

Of the 14 turrets that once stood at Bitchu Matsuyama Castle, this was the only one with two stories, and Takahashi City considers it second in importance only to the keep. Doors on the north and south sides of the ground floor suggest it served as a passage between the main enclosure and the rear bailey. Its plastered Renji-mado slatted windows number one or two per side, except on the west face toward the outside, which has three, plus Ishiotoshi openings for dropping stones on attackers. Like the keep, it rises from a stone base built on carved bedrock.

Local donors paid for a repair in 1928, and a full dismantling and reassembly in 1959 and 1960 brought the turret to its present state. It is said to have kept more of its original fabric than the keep.

The Sannohira Yagura East Earthen Wall

Just inside the site of the Ōte Gate, the path turns left and the Sannohira Yagura East Earthen Wall comes into view straight ahead. The surviving section runs 9.4 meters. The Agency's database lists five gun ports, and you will see both square Sama openings for archers and round ones for muskets. Its core is built from lumps of kneaded earth stacked like blocks, then finished with Shikkui lime plaster.

Takahashi City notes that earthen walls at castles almost never receive this designation. When other walls and turrets of the main enclosure were reconstructed in 1997, this one served as the model, down to the spacing of the loopholes. A small step marks where the original ends and the reconstruction begins, so you can trace the Edo-period stretch with your eye.

Visiting Bitchu Matsuyama Castle

Bitchu Matsuyama Castle is open from 9:00 a.m. to 5:30 p.m. from April to September (last entry 5:00 p.m.) and from 9:00 a.m. to 4:30 p.m. from October to March (last entry 4:00 p.m.). It closes from December 29 to January 3 and may close temporarily for typhoons or snow. Admission is 500 yen for adults and 200 yen for elementary and junior high school students, paid as you enter the main enclosure; the outer baileys up to the Ninomaru are free.

You can go inside the keep during opening hours. The Nijū Yagura is normally closed and seen from outside only, though it opens a few times a year for special viewings; in 2026 it opened from May 3 to 5. The earthen wall is viewed from the path. Takahashi City recommends the Ninomaru as a photo spot, and the classic picture of the keep is taken from there. Official sources do not say whether photography is allowed inside the keep, so ask the staff on the day.

The nearest station is Bitchū-Takahashi on the JR Hakubi Line, about 35 minutes from Okayama by the Yakumo limited express or 50 minutes by local train. A taxi takes about 10 minutes to the Fuigo-tōge parking area, and from there a mountain path of about 700 meters leads to the keep in 20 to 30 minutes. A shared sightseeing taxi (1,000 yen per person each way) runs by advance reservation. You can also take the city loop bus to the Matsuyamajō Tozanguchi stop and walk about 50 minutes, or walk the whole way from the station in about 90 minutes.

By car, allow about 30 minutes from Kaya IC on the Okayama Expressway to Shiromibashi Park parking (110 spaces). On days when the castle shuttle bus operates, private cars cannot drive on to Fuigo-tōge; the bus leaves about every 15 minutes and costs 600 yen for adults and 300 yen for children. On other days you can drive up to Fuigo-tōge (14 spaces), which became a paid lot in September 2026 at 1,000 yen for a car.

Beyond Fuigo-tōge the route is stone steps and slopes, rough in places. The castle cannot be reached by wheelchair, and sneakers are a much better choice than heels or leather shoes. Allow about 2 hours for the visit, including the walk up and back.