CastleFlatland castle (hirajiro)Japan's 100 Fine Castles No. 31
What makes this castle distinctive
On the roof of the turret that served as the castle's keep, there are three shachi ornaments instead of the usual pair.
Why?
Shachi, the fish-like guardian ornaments on Japanese castle roofs, normally come in pairs, one at each end of the ridge. The top ridge of Shibata's Sangai Yagura is T-shaped, so it has three ends and three shachi. Shibata City says no document has yet been found explaining why the roof was built this way.[5][18]
The northwest corner of the main enclosure (honmaru), seen across the moat from Shibata Castle Park.
What to look at
The T-shaped ridge of the top roof and the three shachi sitting on its three ends.
Why it's interesting
Out of deference to the shogunate, the Shibata domain never called it a keep (tenshu), only a "three-story turret" (sangai yagura), but it did the job of one. It was torn down in the early Meiji era and rebuilt in 2004 using traditional methods: wooden framing, clay roof tiles and lime plaster, based on old photographs and other records.[5][8][18]
Can you see it?
Partly visibleExterior only. The turret stands on the Ground Self-Defense Force base side of the site, and its interior is not open to the public (according to a secondary source).
The main gate of the honmaru, just across the bridge over the moat.
What to look at
The two-story gatehouse (yaguramon) straddling the gap in the stone walls, and its black-and-white namako walls with a grid of tiles and raised plaster joints.
Why it's interesting
Most of the castle buildings were torn down in the Meiji era, but this gate and the former Ninomaru corner turret survived as they were in the Edo period and were named Important Cultural Properties in 1957. Japan's Agency for Cultural Affairs calls them rare castle buildings for the Hokuriku region. During the open season, volunteer guides are stationed at the gate every day and explain the castle for free.[1][11][15]
Can you see it?
Visible from outsideOpen April to November, 9:00–17:00 (to 16:30 in November), free. Closed for winter from December to March, when you can still see the outside.
Cut-stone walls and the former Ninomaru corner turret
Where
Along the moat on the south side of the honmaru, on either side of the main gate.
What to look at
Stones cut into neat blocks so they fit together with almost no gaps, and the two-story corner turret standing on the wall's corner.
Why it's interesting
These walls use kirikomi-hagi, a style that favors a clean look, with each stone cut to fit. An earthquake in 1669 brought the walls down, and they were rebuilt in this style. In fact, this stretch was the only part of Shibata Castle with stone walls. The rest was enclosed by earthen ramparts (dorui), probably partly because the soft ground made stone walls hard to build.[6][7][1][12]
Can you see it?
Partly visibleThe walls and the outside of the turret can be seen from the moat. The former Ninomaru corner turret is closed for conservation work from July 24 to November 30, 2026 (work continues until February 5, 2027).
At a glance for visitors
Nearest station
20 min walk from JR Shibata Station
Climb
No climb
Time neededEditors' estimate
Allow about 1 hour for the park, the main gate and Tatsumi Yagura.
Admission
Free (no booking needed)
Hours
9:00–17:00 (to 16:30 in November)
Access
Partly open
Shibata Castle Park on the south side of the honmaru is open to walk around. The main gate and other buildings are open April to November, 9:00–17:00 (to 16:30 in November), free, no booking needed. They close for winter from December to March, though you can still see them from outside; depending on snow, they may reopen in late March. Most of the north side of the honmaru, including Sangai Yagura, is a Ground Self-Defense Force base and off limits. The Japan 100 Castles stamp is at the main gate during the open season, and at Shibata City Hall (1st floor) and the Shirakabe Barracks Museum during the winter closure.
Of the castles left over from the Uesugi era in his new territory, Mizoguchi Hidekatsu picked the site of Shibata Shigeie's old castle. Shibata City suggests why: it sat on flat land formed by the Shibata River, with the Kaji River to the north and deep marshes on both sides for protection, and a lagoon gave it a route to the Sea of Japan. The new castle took in the old one but was several times larger.[2][3]
02
Historical record
Fifty years in the making
In 1598, after Toyotomi Hideyoshi moved Uesugi Kagekatsu to Aizu, Mizoguchi Hidekatsu was given a 60,000-koku domain (han) in Shibata and began building the castle. Moats and earthworks came first, and buildings followed in order of urgency, so the castle was not finished until about 50 years later, under the third lord, Nobunao. The Mizoguchi family went on to rule Shibata for 12 generations, about 270 years, without ever being transferred, until domains were abolished in 1871.[2][3][7][22][13]
03
Tradition
A castle defended by water and marsh
The castle town was ringed by low wetlands said to be impassable even for horses, and successive lords refused to let the surroundings be developed because it would weaken the defenses. The main entrances were masugata koguchi, gate complexes where two gates enclose a square courtyard to trap attackers. One of the castle's nicknames, Ukifune-jo ("floating boat castle"), is said to come from a plan to breach the Kaji River's banks in a siege and flood the land around it.[5][6]
04
Historical record
Rebuilt after fire and earthquake
A great fire in 1668 burned almost the entire castle, and in 1669 a major earthquake brought down its stone walls. During the rebuilding, the walls on the south side of the honmaru were re-laid in fitted cut stone, and in 1679 the Sangai Yagura was completed at the northwest corner, where a two-story turret had stood. Shibata City explains that because the shogunate did not allow new keeps, and because the Mizoguchi were outside lords (tozama daimyo) who had to tread carefully, the tower was called a three-story turret rather than a keep.[5][7]
05
Historical record
Demolished, then a military base
After domains were abolished in 1871 and an 1873 order called for castles to be dismantled, Shibata Castle was torn down except for part of the honmaru. The army's 16th Infantry Regiment was based on the site, and today it is a Ground Self-Defense Force garrison. The main gate, the former Ninomaru corner turret, and the stone walls and moat on the south side of the honmaru still show the castle as it was in the Edo period.[4][15][16]
06
Historical record
Rebuilt by popular demand
People had long wanted the castle rebuilt, but the cost kept it from happening. The city began surveys and design work in 1999, and in 2001 citizens' groups handed the mayor more than 30,000 signatures in support. Over 2002–2003, about 1.2 billion yen was spent rebuilding Sangai Yagura and Tatsumi Yagura in wood, and an opening ceremony was held in July 2004. In fiscal 2024 the city also drew up a plan to rebuild the Dobashi-mon, a gate that once led into the second enclosure.[8][23][9]
Sangai Yagura is completed at the honmaru's northwest corner[7]
Under an order to dismantle castles, all but part of the honmaru is torn down[4]
The main gate and former Ninomaru corner turret become Important Cultural Properties[15][16]
Sangai Yagura and Tatsumi Yagura are rebuilt in wood[8][23]
Buildings and remains
The keep today
Historically documented reconstruction
Shibata never had a building officially called a keep; the Sangai Yagura at the honmaru's northwest corner served as one. It was torn down in the early Meiji era and rebuilt in wood in 2004 (listed by the Japan Castle Foundation as a three-tier, three-story wooden reconstruction).
The site today
The south side of the honmaru is Shibata Castle Park, where you can walk around the main gate, the former Ninomaru corner turret and Tatsumi Yagura. Most of the honmaru and part of the second enclosure are occupied by the Ground Self-Defense Force's Shibata garrison.
Main buildings
OriginalImportant Cultural Property
Omote-mon (main gate of the honmaru)
Edo-period gatehouse. Volunteer guides are stationed here during the open season.[15][11]
OriginalImportant Cultural Property
Former Ninomaru corner turret
Two-story turret. Under conservation repair from July 24, 2026 to February 5, 2027.[16][1]
Rebuilt in wood
Sangai Yagura (three-story turret)
The de facto keep, rebuilt in wood in 2004. On the Self-Defense Force side; exterior only (secondary source).[8][18]
Rebuilt in wood
Tatsumi Yagura (southeast turret)
Two-story turret at the honmaru's southeast corner, rebuilt in wood with Sangai Yagura in 2004.[8][18]
Lost
Dobashi-mon gate
Lost in the Meiji era. The city drew up a basic plan for its reconstruction in fiscal 2024.[9]
Key facts
Type
Castle
Setting
Flatland castle (hirajiro)built on flat ground, defended by moatsEditorial article
Period
Early modern (1570s–1871)Editorial article
Keep (tenshu)
Historically documented reconstructiona building reconstructed from plans, photographs or other historical recordsEditorial article
Built by
Mizoguchi HidekatsuJapan Castle Foundation
Built
1598Japan Castle Foundation
Main lords
Mizoguchi clanJapan Castle Foundation
Abandoned
1873Wikipedia (ja)
Remains to see
Turrets or turret bases, Gates, Stone walls, Earthen ramparts, MoatsEditorial article
Designation
Important Cultural Properties (main gate and former Ninomaru corner turret) (1957); Shibata City Historic SiteEditorial article
Selection
Japan's 100 Fine Castles No. 31Japan Castle Foundation
Visiting
Access
Partly open
Shibata Castle Park on the south side of the honmaru is open to walk around. The main gate and other buildings are open April to November, 9:00–17:00 (to 16:30 in November), free, no booking needed. They close for winter from December to March, though you can still see them from outside; depending on snow, they may reopen in late March. Most of the north side of the honmaru, including Sangai Yagura, is a Ground Self-Defense Force base and off limits. The Japan 100 Castles stamp is at the main gate during the open season, and at Shibata City Hall (1st floor) and the Shirakabe Barracks Museum during the winter closure.
The city gives the walk as 20 minutes and the tourism association as about 25. A bus takes about 5 minutes. The castle is on flat ground, so there are no big hills.[1][12][14]
Checked: 2026-10-03
Hours and admission
Shibata Castle buildings (main gate, former Ninomaru corner turret, etc.)
Hours
9:00–17:00 (to 16:30 in November)
Closed
Open every day from April to November; closed for winter from December to March
About 10 minutes by car from Seiro-Shibata IC on the Nihonkai-Tohoku Expressway. Parking at Shibata Castle Park (10 cars, 5 buses) and at Ainesu Shibata (163 spaces); the tourism association lists them as free.[1][12]
Checked: 2026-10-03
Grounds opening hours
Not confirmedChecked: 2026-10-03
Time neededEditors' estimate
Allow about 1 hour for the park, the main gate and Tatsumi Yagura.
Steps, slopes and footing
This is a flatland castle, and there are no significant slopes in the park.[12][17]
Wheelchairs and strollers
Not confirmedChecked: 2026-10-03
Toilets and rest
Not confirmed
English signs / audio guide
The Shibata City Tourism Association has an English page on the castle. English signage on site is not confirmed.[21]
Seasons
Shibata Castle Park has about 240 Somei-Yoshino and 20 double-flowered cherry trees, usually in full bloom around mid-April. During the bloom, lanterns are hung and the castle is lit up at night. In winter you can see the castle under snow, though the buildings are closed.[14][12]
Photography
Not confirmed
Works, closures and restrictions
The former Ninomaru corner turret is closed for conservation work from July 24 to November 30, 2026 (work runs until February 5, 2027). The winter closure starts in December 2026.[1]Checked: 2026-10-03
The garden of the Mizoguchi lords' secondary residence, a national Place of Scenic Beauty. The grounds also include late-Edo foot-soldier row houses (ashigaru nagaya), an Important Cultural Property. Open 9:00–17:00 (to 16:30 November–February); closed Tuesdays except holidays and in April, May, October and November.[24][18]
A museum on the garrison grounds at the castle site (6-4-16 Otemachi). The 100 Castles stamp is kept here during the winter closure. Closed Mondays and over the New Year holidays.[10]
Checked: 2026-10-03
Editors' guide
An editorial guide based on sources and confirmed information — not a first-hand visit report.
Who will enjoy it
Good for anyone who wants to see original Edo-period gates and turrets up close, fans of carefully rebuilt wooden turrets, and those curious about a castle that shares its grounds with a military base. Entry is free, and volunteer guides are on hand.
What makes it interesting
Start by looking up at the roof of Sangai Yagura from the moat and counting the three shachi. Then compare the original Edo-period main gate and corner turret, and the fitted stone walls between them, with the turrets rebuilt in 2004.
Before you go
The buildings are open only from April to November; from December to March you can only see them from outside. Sangai Yagura is on the Self-Defense Force side and cannot be approached. The former Ninomaru corner turret is closed for repairs until November 30, 2026. It is a 20–25 minute walk from the station.
Ways to enjoy it
Ask the volunteer guides at the main gate (9:00–16:00) about the legend behind the nickname "Kitsune-obiki": a fox is said to have drawn the castle's plan in the snow with its tail. They can also tell you about the three shachi. In spring, the lit-up castle and night cherry blossoms reflected in the moat are a highlight.
Photos
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Open questions
Sources disagree on when the main gate was rebuilt: a secondary source says 1732, while the Agency for Cultural Affairs says the late Edo period. The city's timeline notes that elders recalled a ridge tag recording a rebuild during the 1732 honmaru works.
Why Sangai Yagura has a T-shaped ridge, and therefore three shachi, is unknown; the city says no records explaining it have been found.
The story of a fox drawing the castle plan with its tail is a legend. The person credited with the layout is given as either Nagai Seizaemon or Kasai Geki.
That Sangai Yagura's interior is closed, that Tatsumi Yagura's interior is open, and that the former Ninomaru corner turret was moved to the honmaru are based on a secondary source (Wikipedia).
The city dates Mizoguchi Hidekatsu's arrival to 1598; a secondary source gives 1597.
Park hours, toilets, accessibility and photo rules could not be confirmed.
Drph17CC BY 4.0Wikimedia Commons
