CastleSea castle (umijiro)Next 100 Fine Castles No. 187
What makes this castle distinctive
The gates of the last castle completed in the Edo period now see high school students cycling through them every morning on their way to class.
Why?
Fukue Castle was approved in 1849 as a defense against foreign ships appearing off the islands and was finished in 1863, the last castle of the Edo period. Only nine years later the new Meiji government had it dismantled, and a school was built on the site of the main enclosure. That school is today's Nagasaki Prefectural Goto High School, whose students study inside the surviving gates and stone walls.[3][1][5]
A high school in the main enclosure, with its old gate and stone bridge
Where
Around the former main enclosure, now Goto High School, seen from the road along the moat.
What to look at
The stone bridge over the moat and the gate between the stone walls and plastered walls. Kedashi-mon, once the castle's rear gate, survives.
Why it's interesting
The castle was pulled down, but stone walls, a stone bridge and the Kedashi-mon gate survived. The main enclosure is now school grounds, and students still pass through the castle gate to get to class, a sight you will rarely see elsewhere.[1][5][13]
Can you see it?
Partly visibleThe gate, bridge and walls can be seen from the street outside. The main enclosure is school property, and no official guidance on visiting inside was found, so view it from outside and do not enter the grounds during school hours.
02
The retired lord's residence and the Goto Clan Garden
Where
The southwest corner of the former second enclosure (1-7 Ikeda-machi).
What to look at
The pond shaped like the character for "heart" (kokoro), garden stones and mounds of lava from Mount Onidake, and subtropical plants such as cycads.
Why it's interesting
In 1858, as the castle neared completion, lord Goto Moriakira retired and built a residence and garden in the second enclosure. Because its date is clearly recorded and the house and garden survive together, it is a rare surviving example of a garden inside a castle and is designated a national Place of Scenic Beauty. The use of the island's volcanic stone and southern plants is unique to Goto.[4][6]
Can you see it?
Partly visibleAdmission charged. Open to the public only in spring (April–June) and autumn (September–November), on Saturdays and Sundays 9:00–17:00 and Mondays 9:00–13:00. Groups of 10+ can book year-round except January, July, August and the New Year period.
The stone walls rising from the water of the moat, and the shape of the corners of each bailey (kuruwa).
Why it's interesting
When it was built, the castle was surrounded by sea on three sides, and gun platforms for cannon were placed at the corners of each bailey to defend against attack from the sea. The surroundings have since been reclaimed and the castle now sits in the middle of town, but the moat and walls still hint at its sea-castle past.[3][5]
Can you see it?
Visible from outsideFree to see from the road along the moat.
At a glance for visitors
Time neededEditors' estimate
About 30 minutes for the outside; 1–1.5 hours with the museum; add 30–60 minutes for the garden on open days.
Admission
Adults 300 yen (groups of 20+ 240 yen); high school, junior high and elementary students 100 yen (groups 80 yen); preschoolers free. Combined ticket with the Nizo Yamamoto Museum 500 yen.
The outside of the site (moat, walls, gate) can be viewed freely. The main enclosure is the grounds of Goto High School and no official guidance on visiting inside was found, so view it from outside. The Goto Clan Garden charges admission and opens only on weekends and Mondays in spring and autumn; the museum also charges admission. The Continued Top 100 Castles stamp is at the Goto Clan Garden, and at the Goto Tourism and History Museum on days the garden is closed.
The Goto family, lords of the Goto Islands, lost their castle, Egawa Castle, to fire in 1614. For a long time afterward they governed from a residence called the Ishida Jinya rather than a castle. Three generations of lords asked the shogunate for permission to build one, without success.[1][3]
02
Historical record
Foreign ships change everything
In the late Edo period, foreign ships began sailing near Goto more and more often. Citing the need for coastal defense, the domain finally won permission to build a castle in 1849. Even before that, in 1846, lord Goto Moriakira built the Jotobana breakwater at Fukue Port to hold back big waves and serve as a lighthouse.[1][3][7]
03
Historical record
A sea castle fourteen years in the making
The castle was built on a site surrounded by sea on three sides, with inner and outer moats around the main and second enclosures. Cannon platforms at the bailey corners guarded against attack from the sea. Construction took fourteen years and ended in 1863, making it, along with Matsumae Castle in Hokkaido, one of the newest castles built by a daimyo (feudal lord).[3][4]
04
Historical record
Torn down after nine years
The Meiji Restoration came just five years after the castle was finished, and with the order to dismantle castles it was taken down only nine years after completion. Goto Middle School was built on the main enclosure; it is now Goto High School. The stone walls, moats, a stone bridge and the Kedashi-mon gate survive, and the retired lord's residence and garden in the second enclosure remain much as they were.[1][3][5]
05
Historical record
A castle site turned culture zone
The castle site was designated a Nagasaki Prefecture Historic Site in 1966 and the garden a national Place of Scenic Beauty in 1991. Besides the high school, the site holds the Fukue Cultural Hall and the Goto Tourism and History Museum, forming the city's culture zone. In 2017 it was chosen as one of the Continued Top 100 Japanese Castles.[1][3][4][5]
Nine years after completion, per the prefecture and tourism guide
The castle is dismantled on the Meiji government's orders[3][5]
The Goto Clan Garden becomes a national Place of Scenic Beauty[4]
Buildings and remains
The keep today
No keep was built
There was no keep; a two-story turret in the main enclosure is said to have served instead. The Japan Castle Foundation lists no keep.
The site today
Nagasaki Prefectural Goto High School occupies the main enclosure, and the Fukue Cultural Hall and the Goto Tourism and History Museum also stand on the site. The Goto Clan Garden and retirement residence survive in the second enclosure. Stone walls, moats, a stone bridge and the Kedashi-mon gate remain, and the land around the castle has been reclaimed and built up.
Main buildings
Original
Kedashi-mon (rear gate)
The castle's rear gate, surviving with parts and timbers replaced over time.[5][13]
OriginalPart of the national Place of Scenic Beauty
Inden Yashiki (retirement residence)
Goto Moriakira's retirement house. After about five years of restoration work, its interior is open to visitors.[4][6]
City museum built on the castle site in 1989; it is not a reconstruction of a castle building.[1]
Key facts
Type
Castle
Setting
Sea castle (umijiro)faces the sea, often with seawater moatsEditorial article
Period
Early modern (1570s–1871)Editorial article
Keep (tenshu)
No keep was builtthe castle never had a keepEditorial article
Built by
Goto Moriakira, Gotō MorinoriJapan Castle Foundation
Built
1849Japan Castle Foundation
Main lords
Uku clanJapan Castle Foundation
Abandoned
1872Wikipedia (ja)
Remains to see
Turrets or turret bases, Gates, Stone walls, Moats, Earthen ramparts, Baileys / enclosures (kuruwa)Editorial article
Designation
Nagasaki Prefecture Historic Site (Ishida Castle ruins) (1966); National Place of Scenic Beauty (Goto Clan Garden) (1991)Editorial article
Selection
Next 100 Fine Castles No. 187Japan Castle Foundation
Visiting
Access
Partly open
The outside of the site (moat, walls, gate) can be viewed freely. The main enclosure is the grounds of Goto High School and no official guidance on visiting inside was found, so view it from outside. The Goto Clan Garden charges admission and opens only on weekends and Mondays in spring and autumn; the museum also charges admission. The Continued Top 100 Castles stamp is at the Goto Clan Garden, and at the Goto Tourism and History Museum on days the garden is closed.
December 29 – January 3, plus occasional closures for fumigation or maintenance
Admission
Adults 300 yen (groups of 20+ 240 yen); high school, junior high and elementary students 100 yen (groups 80 yen); preschoolers free. Combined ticket with the Nizo Yamamoto Museum 500 yen.[2]
Checked: 2026-10-04
Goto Clan Garden and retirement residence
Hours
Spring (April–June) and autumn (September–November): Saturdays and Sundays 9:00–17:00, Mondays 9:00–13:00
Closed
Not open to the general public at other times. Groups of 10+ can book by the 20th of the previous month, except January, July, August and December 27 – January 8.
There is no railway. About 10 minutes on foot from Fukue Port, or about 10 minutes by bus from Goto-Tsubaki Airport to the museum. Free parking for 15 cars, shared with the museum (no large buses).[5][11]
Checked: 2026-10-04
Grounds opening hours
No set hours were found for viewing the outside of the site.Checked: 2026-10-04
Time neededEditors' estimate
About 30 minutes for the outside; 1–1.5 hours with the museum; add 30–60 minutes for the garden on open days.
Steps, slopes and footing
A flat castle site in the middle of town, with no significant slopes.[9]
Wheelchairs and strollers
Not confirmedChecked: 2026-10-04
Toilets and rest
Not confirmed
English signs / audio guide
The museum has an English pamphlet. Its films have English subtitles, and the World Heritage guidance theater on the third floor offers multilingual narration.[1][12]
Seasons
The Goto Clan Garden opens to the public only in spring (April–June) and autumn (September–November), so plan for a weekend or Monday in those seasons if you want to see it.[6]
Photography
Photography is not allowed in the museum's exhibition rooms. Rules for the outside of the site are not confirmed.[2]
Works, closures and restrictions
Since July 2023 the Goto Clan Garden has opened only on weekends and Mondays in spring and autumn. The Continued Top 100 Castles stamp is at the Goto Clan Garden, or at the Goto Tourism and History Museum when the garden is closed (Japan Castle Foundation list as of August 26, 2026).[6][10]Checked: 2026-10-04
Breakwater and lighthouse built in 1846 on Goto Moriakira's orders, ahead of the castle; thought to be the work of the same stonemasons. About 5 minutes on foot from Fukue Port.[7]
A street near the castle lined with the stone walls of middle-ranking Goto samurai homes. Its lava-stone walls are topped with loose round stones called koboreishi. About 10 minutes on foot from Fukue Port.[8]
Checked: 2026-10-04
Editors' guide
An editorial guide based on sources and confirmed information — not a first-hand visit report.
Who will enjoy it
Good for fans of late-Edo history, Japanese gardens and port-town strolls. It is within walking distance of Fukue Port, so it fits easily into the start of a Goto trip.
What makes it interesting
Walk along the moat to see the walls and gate of what was once a sea castle. Then learn about the Goto family and the castle at the museum, and if the garden is open, see its lava-stone landscape and heart-shaped pond.
Before you go
The main enclosure is an active high school, so view it from outside without entering. The Goto Clan Garden opens only on weekends and Mondays in spring and autumn, so plan around that. There never was a keep, and almost none of the castle buildings remain.
Ways to enjoy it
Combine the castle with Jotobana and the samurai residence street to see how the port town of Fukue grew around it. Around school start time, students passing through the castle gate show how the castle lives on today.
Photos
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Open questions
Goto City's museum says the castle was dismantled after the Meiji Restoration, which came five years after completion; Nagasaki Prefecture and the tourism site say it was dismantled nine years after completion.
The museum's own page places it on the former second enclosure, while the tourism site says the former north enclosure.
We could not confirm whether the gate in the photos is Kedashi-mon or another gate.
The Japan Castle Foundation names Goto Moriakira as the builder; other sources name his son Goto Morinori, lord at the time of completion. Moriakira is said to have kept real power after retiring in 1858.
Whether the high school grounds may be visited, toilet locations and accessibility information could not be confirmed.
Nami-jaCC BY-SA 4.0Wikimedia Commons
