CastleHilltop castle (hirayamajiro)Japan's 100 Fine Castles No. 95
What makes this castle distinctive
A castle held by a single family, the Sagara, from the Kamakura period all the way to the Meiji era.
Why?
The Sagara family, rulers of the Hitoyoshi-Kuma basin, used the steep Kyushu mountains around their land to keep invaders out and governed for so long that the era is called "the Sagara 700 years." Hitoyoshi Castle was their base. Because a stone bearing a crescent-moon pattern was dug up during construction, it is also called the Crescent Moon Castle (Mikazuki-jo or Sengetsu-jo).[5][6]
Three things not to miss
01
A stone-built underground chamber found nowhere else
Where
Inside the Hitoyoshi Castle History Museum.
What to look at
The underground room enclosed by fitted stone, and the spring water that still collects in it.
Why it's interesting
Hitoyoshi City describes this underground chamber as unlike anything else found in Japan. It is preserved where it was discovered, and spring water collects inside its stone walls. The city has also put a 3D model online so you can view it from every angle.[1]
Can you see it?
Visible from outsideRequires admission to the Hitoyoshi Castle History Museum (closed Tuesdays).
The stone walls on the Kuma River side, around the lord's residence (Mitachi).
What to look at
The flat stones laid at the very top of the wall so that they jut outward.
Why it's interesting
The overhang stops attackers from climbing over the top, a technique said to be adapted from European fortification. It was built after the castle burned in the great Torasuke Fire of 1862, and walls of this type are said to exist at only a handful of other places in Japan, such as Goryokaku in Hokkaido.[8][3]
Can you see it?
Partly visiblePart of the path on the east side of the castle park is closed until March 31, 2027 (planned) for disaster repairs to the riverside walls.
The residence moat, its stone bridge, and Ote Bridge
Where
Around Sagara Shrine (the former lord's residence, Mitachi) and the Mune River on the west side.
What to look at
The water moat in front of the residence with the Mitachi Gomon stone bridge, and Ote Bridge leading to the castle's main entrance.
Why it's interesting
In the Edo period the lord's residence, called Mitachi, stood around today's Sagara Shrine main hall. Hitoyoshi City relates that when the stone bridge over the moat in front of it was completed, 40 groups of usu-daiko drum dancers from across the domain gathered and danced in celebration for 12 days, a lord and his people celebrating together.[6][2]
Can you see it?
Not confirmedViewing access on site is not confirmed. The honmaru has been closed since the July 2026 earthquake.
At a glance for visitors
Nearest station
from JR Hitoyoshi Station
Climb
Not confirmed
Time neededEditors' estimate
About an hour for the museum and the open parts of the castle park.
Admission
330 yen; 220 yen per person in groups of 20+; free for high school students and younger
Hours
9:00–17:00 (last entry 16:30)
Access
Partly open
The castle park can be visited, but since July 28, 2026 the honmaru has been closed all day because of the risk of collapse (no reopening date). Part of the east-side path is closed from September 7, 2026 to March 31, 2027 (planned) for riverside wall repairs. The History Museum charges admission. The Japan 100 Castles stamp is inside the museum (left of the main entrance) and available only 9:00–17:00 (on closing days, ask staff during those hours).
Hitoyoshi Castle stands where the Kuma River guards the north, the Mune River the west, and steep hills the east and south; Hitoyoshi City calls it an impregnable natural fortress. The third enclosure lines the Kuma River, the second lies south of it, and the main enclosure (honmaru) sits on the hill above.[5][8]
02
Tradition
Seven centuries of the Sagara
In the Kamakura period Sagara Nagayori came to Hitoyoshi as its land steward (jito), and from then until the Meiji Restoration the Sagara family ruled the Hitoyoshi-Kuma area. Tradition says a stone with a crescent-moon pattern turned up when Nagayori worked on the castle, giving it the name Crescent Moon Castle. The culture that grew under the Sagara's long rule has been recognized as a Japan Heritage story.[5][6]
03
Historical record
From hilltop forts to a stone-walled castle
In the Warring States period the castle's center was Uebaru Castle, across a valley south of today's honmaru, with Nakabaru, Shimobaru and other enclosures forming a cluster typical of southern Kyushu. Rebuilding began in the Tensho era (1570s–90s), and from the Keicho era (1600s) the castle was remade as a stone-walled early modern castle, with its center moved to the present site. The main entrance was moved from the east to the west side, and Ote Bridge was built across the Mune River.[6]
04
Historical record
Burned in a great fire; the walls remain
In 1862 the Torasuke Fire, which burned most of the castle town, destroyed the castle as well. The castle is believed never to have had a keep. Today the stone walls survive in a castle park known for cherry blossoms in spring and autumn leaves, and some turrets and walls have been rebuilt in wood.[5][8][10]
05
Historical record
Through floods and earthquakes
The Hitoyoshi Castle History Museum opened on the site in 2005. The July 2020 floods badly damaged the castle grounds and surroundings and closed the museum, which reopened on July 11, 2025. The riverside stone walls deformed by the floods are still being repaired. Then the Kumamoto earthquake of July 28, 2026 created a risk of collapse, and the honmaru has been closed all day for the time being.[5][1][3][2]
The honmaru is closed after the 2026 Kumamoto earthquake[2]
Buildings and remains
The keep today
No keep was built
No keep was built; the honmaru is said to have held a Buddhist prayer hall instead. A Kagoshima Prefecture leaflet also lists Hitoyoshi as a castle that never had a keep.
The site today
The site is a castle park with the Hitoyoshi Castle History Museum. Stone walls survive, along with some turrets and walls rebuilt in wood. Since the July 2026 earthquake the honmaru has been closed, and repairs to riverside walls damaged in the 2020 floods continue.
Main buildings
Rebuilt in wood
Corner turret, tamon turret and long walls
Rebuilt in wood in 1989 and 1993 (according to Wikipedia).[8]
Site only
Mitachi (lord's residence)
Around today's Sagara Shrine main hall, with the Mitachi Gomon stone bridge over the moat in front.[6]
Hilltop castle (hirayamajiro)built on a low hill rising from the plainEditorial article
Period
Medieval (c.1185–1570s), Early modern (1570s–1871)Editorial article
Keep (tenshu)
No keep was builtthe castle never had a keepEditorial article
Built by
Sagara NagayoriJapan Castle Foundation
Built
1199Japan Castle Foundation
Main lords
Sagara clanJapan Castle Foundation
Abandoned
1871Wikipedia (ja)
Remains to see
Stone walls, Earthen ramparts, Turrets or turret bases, Gates, Moats, Baileys / enclosures (kuruwa), Fortified gateways (koguchi)Editorial article
Designation
National Historic Site (Hitoyoshi Castle ruins) (1961); Component of the Japan Heritage story "Sagara 700 Years" (2015)Editorial article
Selection
Japan's 100 Fine Castles No. 95Japan Castle Foundation
Visiting
Access
Partly open
The castle park can be visited, but since July 28, 2026 the honmaru has been closed all day because of the risk of collapse (no reopening date). Part of the east-side path is closed from September 7, 2026 to March 31, 2027 (planned) for riverside wall repairs. The History Museum charges admission. The Japan 100 Castles stamp is inside the museum (left of the main entrance) and available only 9:00–17:00 (on closing days, ask staff during those hours).
Address
18-4 Fumoto-machi, Hitoyoshi, Kumamoto 868-0051 (Hitoyoshi Castle History Museum)[1]
Checked: 2026-10-03
Nearest stations and how to get there
JR Hitoyoshi StationNot confirmed (check rail service before you go)
Not confirmed
Take a bus from the station to Itsukamachi and walk about 9 minutes (according to Wikipedia). The city's own directions cover only car access.[8]
Checked: 2026-10-03
Hours and admission
Hitoyoshi Castle History Museum
Hours
9:00–17:00 (last entry 16:30)
Closed
Tuesdays (or the next day if Tuesday is a holiday), December 29 – January 3
Admission
330 yen; 220 yen per person in groups of 20+; free for high school students and younger[1]
Checked: 2026-10-03
By car / parking
About 2.5 km from Hitoyoshi IC on the Kyushu Expressway (about 10 minutes by taxi), or 2.6 km from Hitoyoshi-Kuma Smart IC (about 5 minutes by taxi).[1]
Checked: 2026-10-03
Grounds opening hours
Not confirmedChecked: 2026-10-03
Time neededEditors' estimate
About an hour for the museum and the open parts of the castle park.
Steps, slopes and footing
The riverside third enclosure is flat, but the second enclosure and honmaru are up on the hill (the honmaru is currently closed).[8]
Wheelchairs and strollers
Not confirmedChecked: 2026-10-03
Toilets and rest
Not confirmed
English signs / audio guide
Not confirmed
Seasons
Cherry blossoms in spring and autumn leaves in fall.[5]
Photography
Not confirmed
Works, closures and restrictions
The honmaru has been closed since July 28, 2026 because of the 2026 Kumamoto earthquake (no reopening date), and the Sagara family cemetery historic site has been closed since the same day. Part of the east-side path is closed until March 31, 2027 (planned).[2][9][3]Checked: 2026-10-03
The leading shrine of the Hitoyoshi-Kuma area, said to date from 806. Its main hall, corridor, offering hall, worship hall and gate were designated National Treasures in 2008, the first thatched shrine buildings in Japan to receive that status.[5]
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
For those who like strolling a keep-less castle of stone walls and rivers, anyone curious about a single family's 700-year rule, and travelers who want to pair a castle visit with Kuma River boat rides and hot springs.
What makes it interesting
The underground chamber in the History Museum is something no other castle has. Outside, look for the riverside walls and the hanedashi wall with its jutting top course.
Before you go
Since the July 2026 earthquake the honmaru is closed, and part of the east path is shut too. The museum closes on Tuesdays. Check Hitoyoshi City's notices for the latest before you go.
Ways to enjoy it
Start at the History Museum to learn about the Sagara and the castle, then walk the grounds. From the opposite bank of the Kuma River, or from a river boat, you can see the long line of riverside walls from outside.
Photos
Visitor reviews
Be the first to review
Have you visited this castle? We'd love to hear from you.
Write a review
Open questions
The European origin and rarity of the hanedashi wall, the reconstruction years of the turrets and walls, and the 1961 designation date come from Wikipedia.
The crescent-moon stone story is a tradition. The year Sagara Nagayori became land steward (1205) comes from Wikipedia.
The honmaru closure has no end date. Rail access, walking time from the station, park hours, accessibility, toilets and English information could not be confirmed.
