CastleSea castle (umijiro)Japan's 100 Fine Castles No. 79
What makes this castle distinctive
Todo Takatora built this castle right on the shore, and its broad moat is still filled with seawater.
Why?
Imabari Castle is a flatland castle built on the shore of the Seto Inland Sea, with broad seawater moats and a large funairi, a harbor inside the castle. The city calls it one of Japan's finest sea castles. The inner moat still holds seawater, and from inside the Kurogane Gomon gate you can see the moat and the inubashiri, the narrow ledge around the base of the walls, up close.[1][4]
The inner moat around the central enclosures, seen from inside Kurogane Gomon and Bugu Yagura or from the moat banks
What to look at
The wide expanse of water, and the narrow strip of level ground left between the water and the foot of the walls
Why it's interesting
This is where the castle's connection to the sea is clearest. A harbor once lay inside the castle so boats could come and go. The inubashiri ledge around the base of the walls is highlighted by the city as one of the castle's distinctive features.[1][2][4]
Can you see it?
Visible from outsideThe moat banks are part of Fukiage Park, free and open 24 hours. Inside Kurogane Gomon and Bugu Yagura requires a ticket.
The large square courtyard (masugata) and the long turrets around it, laid out so defenders could attack from three directions, including from above the gate
Why it's interesting
The city explains that this gate and its turrets formed the strongest type of castle entrance and became a model for later castle gateways in Japan. They were rebuilt as faithfully as possible in 2007, and inside are videos and explanation panels.[1][4]
Can you see it?
Visible from outsideYou can walk through the gate. The interior requires the shared ticket for the keep and turrets.
Top floor of the keep at the north corner of the main enclosure
What to look at
The Kurushima Kaikyo Bridge, the Hiuchi-nada sea, the Ishizuchi mountains and the city of Imabari
Why it's interesting
From up here you can see how close to the sea the castle was built. With the free smartphone app "Imabari Castle AR" you can overlay a recreated view of the Edo-period town.[1][2]
Can you see it?
Visible from outsidePaid entry. Stairs only; not barrier-free.
At a glance for visitors
Nearest station
from JR Imabari Station
Climb
No climb
Time neededEditors' estimate
About 1.5 hours to walk the moat and visit the keep and turrets.
Admission
Adults 520 yen, students 260 yen, seniors 65+ 420 yen; free for high school students and younger or under-18s. Groups of 20+: 420 / 210 yen. Free for holders of disability certificates and one helper.
Hours
9:00–17:00 (last entry 16:30)
Access
Open to visitors
The historic park (Fukiage Park) is free and open 24 hours, year-round. One ticket covers the interiors of the keep, Okane Yagura, Yamazato Yagura and Kurogane Gomon / Bugu Yagura.
Todo Takatora sided with the Eastern Army at Sekigahara and was rewarded with half of Iyo Province, worth 200,000 koku. He began building on the Imabari shore in 1602; the earthworks were finished in 1604, and the castle with all its buildings is thought to have been complete around 1608.[1]
02
Historical record
Linking the castle to the sea
The castle was built right on the Seto Inland Sea coast. Its broad moats were filled with seawater and a large harbor was built inside the walls, so people and goods could reach the castle directly by boat.[1]
03
Historical record
Takatora moves on, and the keep comes down
Around the time the castle was finished, Takatora was transferred to Iga and Ise, and the city says the five-tier keep was dismantled at the same time. His adopted son Takayoshi stayed on in Imabari, and from 1635 the Matsudaira (Hisamatsu) family ruled until the Meiji era.[1][6]
04
Historical record
Only the inner moat and walls survived
In the Meiji era most of the buildings were torn down, leaving only the inner moat and the stone walls of the central enclosures. In 1953 these were designated a Historic Site by Ehime Prefecture.[1]
05
Historical record
Rebuilding from 1980
The keep, long turrets and armory turret were built in 1980, followed by Okane Yagura in 1985, Yamazato Yagura in 1990 and Kurogane Gomon in 2007. The keep is a mock keep built on the site of a corner turret at the north of the main enclosure; it does not reproduce the original keep's location or appearance.[1]
A reinforced-concrete mock keep built in 1980 on the site of the north corner turret, as described by Imabari City. Takatora's original five-tier keep was dismantled around 1608.
The site today
The central enclosures are Fukiage Park, a historic park open free 24 hours, with the original inner moat and walls and rebuilt keep, turrets and gates. The outer moats and harbor do not survive.
Main buildings
Mock
Keep (tenshu)
Mock keep built in 1980, with displays of armor, documents and photographs and an observation deck on the sixth floor.[1]
Modern reconstruction
Kurogane Gomon gate and Bugu Yagura
Main gate of the second enclosure and its long turrets, rebuilt as faithfully as possible in 2007 (the city calls it a faithful restoration; construction materials not confirmed). Interior open.[1][4]
Modern reconstruction
Okane Yagura
Two-story turret at the east corner of the second enclosure, rebuilt in 1985; now a gallery of modern art by local artists.[1]
Modern reconstruction
Yamazato Yagura
Two-story turret at the northwest corner of the second enclosure, rebuilt in 1990; displays armor and antiques.[1]
Key facts
Type
Castle
Setting
Sea castle (umijiro)faces the sea, often with seawater moatsEditorial article
Period
Early modern (1570s–1871), ModernEditorial article
Keep (tenshu)
Mock keepa keep-shaped building where no keep existed, or where its appearance is unknownEditorial article
Built by
Todo TakatoraJapan Castle Foundation
Built
1602Japan Castle Foundation
Main lords
Tōdō clan, Matsudaira clanJapan Castle Foundation
Abandoned
1873Wikipedia (ja)
Remains to see
Stone walls, Moats, Gates, Turrets or turret bases, Baileys / enclosures (kuruwa), Fortified gateways (koguchi)Editorial article
Designation
Ehime Prefecture Historic Site (Imabari Castle ruins) (1953)Editorial article
Selection
Japan's 100 Fine Castles No. 79Japan Castle Foundation
Visiting
Access
Open to visitors
The historic park (Fukiage Park) is free and open 24 hours, year-round. One ticket covers the interiors of the keep, Okane Yagura, Yamazato Yagura and Kurogane Gomon / Bugu Yagura.
Setouchi Bus bound for "Imabari Eigyosho" from the station, about 9 minutes, to "Imabari-jo-mae". No official walking time from the station is given. It is about 10 minutes on foot from Imabari Port.[3]
Closed only December 29–31 (and occasionally for exhibition changes)
Admission
Adults 520 yen, students 260 yen, seniors 65+ 420 yen; free for high school students and younger or under-18s. Groups of 20+: 420 / 210 yen. Free for holders of disability certificates and one helper.[2]
Checked: 2026-10-03
By car / parking
No. 1 parking lot: 66 cars, open 24 hours, 100 yen per hour. Bus lot No. 2 requires reservation. On weekends and holidays (9:00–18:00), free roadside parking is allowed along the southeast moat. About 15 minutes from Imabari-Kita IC (Shimanami Kaido) or 20 minutes from Imabari-Yunoura IC.[2][3]
Checked: 2026-10-03
Grounds opening hours
Fukiage Park is free and open 24 hours, year-round.[2]Checked: 2026-10-03
Time neededEditors' estimate
About 1.5 hours to walk the moat and visit the keep and turrets.
Steps, slopes and footing
A flatland castle with almost no slopes, but the keep, turrets and gate all require climbing stairs to enter.[2][5]
Wheelchairs and strollers
The keep, turrets and gate are not barrier-free. The public toilets at the parking lot and in the second-enclosure park are accessible; the toilet in the keep is not.[2]Checked: 2026-10-03
Toilets and rest
Accessible public toilets at the parking lot and in the second-enclosure park; also a toilet on the keep's first floor.[2][1]
English signs / audio guide
Not confirmed
Seasons
The castle is lit daily from 30 minutes after sunset until 22:00, all night from the evening of December 31 to the morning of January 4, and not at all on the nights of June 21 and July 7.[1]
Photography
Not confirmed
Works, closures and restrictions
None noted (closed December 29–31 and occasionally for exhibition changes).[2]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 curious about how sea castles worked, travelers on the Shimanami Kaido route, and fans of broad moats and stone walls.
What makes it interesting
The moat and walls matter more than the buildings. Look in turn at the seawater moat, the ledge at the foot of the walls and the squared entry at Kurogane Gomon to see a castle designed around both the sea and defense.
Before you go
The keep is a 1980 mock keep that does not reproduce the original's location or appearance. Interiors of the keep and turrets have stairs and are not barrier-free.
Ways to enjoy it
Walk around the moat by day, then return after sunset to see the illuminated walls and keep reflected in the water. On the keep's observation deck, the Imabari Castle AR app overlays the Edo-period town.
Photos
Visitor reviews
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Open questions
The city says Takatora is said to have built a five-tier keep, which was dismantled when he was transferred to Iga and Ise. Another theory holds that it was moved to Tanba Kameyama Castle (Wikipedia).
"One of the largest castle harbors in Japan" and "one of Japan's finest sea castles" are Imabari City's descriptions.
Walking time from JR Imabari Station, English guidance and photo rules could not be confirmed.
ReggaemanCC BY-SA 3.0Wikimedia Commons
