CastleFlatland castle (hirajiro)Next 100 Fine Castles No. 103
What makes this castle distinctive
A castle at the northern tip of Honshu where a family said to descend from the noble Kitabatake clan kept up ties with Kyoto. Eight enclosures, split by double moats 20 m wide, fan out across the land.
Why?
Namioka Castle was built in the 1460s by the Namioka Kitabatake family, said to descend from Kitabatake Chikafusa, who served Emperor Go-Daigo in the 14th-century struggle between rival imperial courts. At their height in the early 1500s they kept up lively contacts with Kyoto and founded temples and shrines. The castle used no stone walls; instead, double moats about 20 m wide and 5 m deep divided it into eight enclosures.[1]
Three things not to miss
01
国土地理院 (Geospatial Information Authority of Japan) · Attribution · Wikimedia Commons
Double moats and the earthen ridges between them
Where
The moats running between the Uchidate, Kitadate, Higashidate and other enclosures.
What to look at
Moats about 20 m wide and 5 m deep, with an earthen ridge built down the middle.
Why it's interesting
The ridges inside the moats strengthened the defenses and are thought to have doubled as walkways, turning the whole castle into a maze. It is a clear example of a medieval castle defended entirely with earthworks, very different from stone-walled castles.[1]
Can you see it?
Visible from outsideOpen all year, free. In winter only part of the site is accessible because of snow.
02
Uchidate, the lord's residence
Where
Uchidate, at the heart of the castle, the equivalent of a main enclosure.
What to look at
The single large terrace that formed one residence, and the site of a building whose posts stood on foundation stones.
Why it's interesting
Excavations from 1984 to 1987 found that the whole Uchidate terrace was a single residence, with a special building whose post holes had stones set at the bottom. The city says it included a room called a kokonoma and was very likely used for government business and receiving guests.[2]
Can you see it?
Visible from outsideVisible as part of the site; no buildings remain.
03
Kitadate, the retainers' quarter
Where
Kitadate, north of Uchidate.
What to look at
House lots laid out on both sides of an east–west road, with a well for each house.
Why it's interesting
Excavations from 1977 to 1983 revealed house lots on both sides of a road, laid out differently over time. Each lot had at least one wood-lined well, suggesting retainers lived in separate households, much like a samurai residential quarter. It shows Namioka was a place to live, not only a fortress.[2][1]
Can you see it?
Visible from outsideVisible as part of the site.
At a glance for visitors
Nearest station
15 min walk from JR Namioka Station
Climb
Not confirmed
Time neededEditors' estimate
About an hour for the castle site, or 1.5–2 hours including Chusei-no-Yakata.
Admission
Adults 210 yen (groups 110 yen), high school students 110 yen (groups 60 yen), free for junior high students and younger
Hours
9:00–17:00
Access
Open to visitors
The site is open all year and free to enter; in winter, snow limits access to part of it. The Next 100 Castles stamp is kept beside the front entrance of Aomori City Chusei-no-Yakata, available 24 hours.
Namioka Castle covers a designated area about 940 m east–west and 245 m north–south, with eight enclosures fanning out across it. According to a secondary source, it sits at the southern end of a ridge running northeast, with the Namioka and Shohetsu rivers flowing below its steep southern cliffs as a natural moat and water supply.[1][5]
02
Tradition
The Kitabatake of the north
The castle was built in the 1460s by the Namioka Kitabatake family, who are said to descend from Kitabatake Chikafusa, a loyal supporter of Emperor Go-Daigo in the 14th century. At their peak in the early 1500s they kept up lively ties with Kyoto and founded temples and shrines.[1]
03
Historical record
Family feud and the fall of the castle
In 1562 a feud within the family, known as the Kawara Gosho Rebellion, weakened them, and in 1578 the castle fell to Oura (later Tsugaru) Tamenobu. After the fall, Tamenobu's younger brother is said to have served for a time as his deputy in the Higashidate enclosure.[1][2]
04
Historical record
Four centuries under fields
For about 400 years after the fall, the site was farmed as fields and rice paddies. No buildings survive, but the moats and earthworks remain well preserved. Excavations since 1977 have found more than 50,000 objects, including tableware, cooking utensils, weapons, farm tools and religious items. Only about 30 percent of the site has been investigated, so much still lies underground.[1]
05
Historical record
Aomori's first National Historic Site
On February 10, 1940, the Namioka Castle site became the first National Historic Site in Aomori Prefecture. Aomori City continues to develop it as a historic park where visitors can learn history by experiencing how people lived. Finds are displayed at the nearby Aomori City Chusei-no-Yakata museum, and in 2017 the site was named one of the Next 100 Fine Castles of Japan.[1][3]
Named one of the Next 100 Fine Castles of Japan[1][4]
Buildings and remains
The keep today
No keep was built
A medieval castle made up of a cluster of enclosures; it never had a keep.
The site today
The site is being developed as a historic park. The landforms of the eight enclosures, moats and ramparts survive, but no buildings. The Namioka Castle Site Information Center offers parking and a rest area, and finds are displayed at the nearby Aomori City Chusei-no-Yakata.
Main buildings
Site only
Buildings of Uchidate and other enclosures
Building sites found in excavations; nothing stands today.[2]
Key facts
Type
Castle
Setting
Flatland castle (hirajiro)built on flat ground, defended by moatsEditorial article
Period
Medieval (c.1185–1570s)Editorial article
Keep (tenshu)
No keep was builtthe castle never had a keepEditorial article
National Historic Site (Namioka Castle site), Aomori Prefecture's first (1940)Editorial article
Selection
Next 100 Fine Castles No. 103Japan Castle Foundation
Visiting
Access
Open to visitors
The site is open all year and free to enter; in winter, snow limits access to part of it. The Next 100 Castles stamp is kept beside the front entrance of Aomori City Chusei-no-Yakata, available 24 hours.
Address
Namioka, Namioka-aza, Aomori City, Aomori (Information Center: 14-1 Gosho, Namioka)[1]
Checked: 2026-10-03
Nearest stations and how to get there
JR Namioka StationJR Ou Line
about 15 min walk · Not confirmed
Estimate from a secondary source; no official directions were found.[5]
Checked: 2026-10-03
Hours and admission
Aomori City Chusei-no-Yakata (exhibition rooms)
Hours
9:00–17:00
Closed
Mondays (or the next day if Monday is a holiday), the third Sunday of each month, and December 28 – January 4
Admission
Adults 210 yen (groups 110 yen), high school students 110 yen (groups 60 yen), free for junior high students and younger[3]
Checked: 2026-10-03
Namioka Castle Site Information Center
Hours
9:00–16:00
Closed
Closed December 1 – March 31; other closing days are presumably the same as Chusei-no-Yakata (not confirmed).
Use the Information Center parking lot (24 cars, 3 buses, plus a temporary lot for about 100 cars). Chusei-no-Yakata also has parking for 84 cars and 3 buses.[1][3]
Checked: 2026-10-03
Grounds opening hours
Open year-round (no hours specified).[1]Checked: 2026-10-03
Time neededEditors' estimate
About an hour for the castle site, or 1.5–2 hours including Chusei-no-Yakata.
Steps, slopes and footing
You walk between enclosures separated by moats and ramparts; snow limits where you can go in winter.[1]
Wheelchairs and strollers
No accessibility information was found for the castle site; the city page marks Chusei-no-Yakata's facilities with icons, which were not checked in detail.[3]Checked: 2026-10-03
Toilets and rest
Toilet locations could not be confirmed (the Information Center serves as a rest area).[1]
English signs / audio guide
English information not confirmed.
Seasons
In winter, snow restricts visits to part of the site.[1]
Photography
No official photography rules were found.
Works, closures and restrictions
The Information Center is closed December 1 – March 31. At Chusei-no-Yakata, the Old Tsubota Residence (a prefectural treasure) is off-limits due to snow damage.[1][3]Checked: 2026-10-03
City facility with an exhibition room, "Namioka Castle Revived," that uses excavated finds and a reconstruction model to show life at the castle in the Middle Ages.[3]
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 want to feel the scale of an earthwork castle with no stone walls or keep, and anyone interested in the medieval northern Tohoku or Tsugaru history. Combine it with Hirosaki Castle to trace the rise of Tsugaru Tamenobu.
What makes it interesting
The double moats with ridges between the enclosures; the contrast between Uchidate, the lord's residence, and Kitadate, the retainers' quarter. At Chusei-no-Yakata, check the excavated finds and reconstruction model to see how people lived.
Before you go
No buildings survive; the attraction is the landform of moats and ramparts. In winter snow limits access and the Information Center is closed December–March. Chusei-no-Yakata closes on Mondays and the third Sunday of each month.
Ways to enjoy it
See the model at Chusei-no-Yakata first to fix the layout of the eight enclosures in your mind, then walk the site to feel the depth of the moats and the size of each enclosure. The Next 100 Castles stamp beside Chusei-no-Yakata's entrance is available 24 hours.
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 Namioka Kitabatake family's descent from Kitabatake Chikafusa is a tradition.
The founding is estimated to the 1460s; the exact year is unknown.
The description of the terrain (cliffs and rivers to the south) and the 15-minute walk from JR Namioka Station come from a secondary source (Wikipedia).
The Japan Castle Foundation classifies it as a flatland castle, while a secondary source calls it a hill-and-flatland castle.
Toilets, accessibility, English information and photography rules for the site could not be confirmed.
国土地理院 (Geospatial Information Authority of Japan)AttributionWikimedia Commons
