CastleMountain castle (yamajiro)Japan's 100 Fine Castles No. 54
What makes this castle distinctive
Nobunaga's seven-story tenshu burned only about three years after it was finished; on the summit, just its foundation stones remain in neat rows.
Why?
Oda Nobunaga moved into the tenshu (main keep) when it was completed in 1579, but soon after his death in the Honnoji Incident of 1582 the keep and the buildings around it burned. Today the keep base holds only the foundation stones of its basement level, set about 1.2 m apart. Even so, the national heritage description says this castle, with high stone walls covering the whole hill and a towering keep, shows the prototype of later Japanese castles.[1][2][4]
The keep site on the summit of Mt. Azuchi, beyond the main enclosure.
What to look at
The platform, about 28 m square, enclosed by head-high stone walls, and the foundation stones laid out about 1.2 m apart.
Why it's interesting
This was the basement level (anagura) of the keep; above it, according to Soken-ji, which manages the site, rose a seven-story tenshu about 33 m tall. The Jesuit missionary Luis Frois wrote that he doubted anything so grand existed even in Europe. Only its footprint remains. From here you can also see Lake Biwa and the inner lakes.[3][5]
Can you see it?
Visible from outsideReached on foot via the Ote-michi after paying the entry fee.
The straight Ote-michi, and stone Buddhas in its steps
Where
The Ote-michi, right after the entrance.
What to look at
The wide stone steps running straight up the hill, the stone Buddhas set among them, and the supposed residence sites of Maeda Toshiie and Hashiba Hideyoshi on either side.
Why it's interesting
The Ote-michi was the castle's grand front approach. Stone was gathered from nearby mountains for the construction, including stone Buddhas and gravestones; those found here are preserved as discovered to show how the castle was built.[3][6]
Can you see it?
Visible from outsideEntry fee required. Long stone steps with rough footing in places.
On the way back down from the keep site, past the former Soken-ji temple grounds.
What to look at
The Muromachi-period three-story pagoda and Nio-mon gate, and the view of Lake Nishinoko from the Soken-ji site.
Why it's interesting
Soken-ji was moved here by Nobunaga during the castle's construction to serve as his family temple. A fire in 1854 destroyed the main hall and more, but the three-story pagoda (built 1454) and the Nio-mon gate survived; both are Important Cultural Properties. They are the rare old buildings you can see on the castle site.[3][5][6]
Can you see it?
Visible from outsideViewable from outside. Soken-ji's occasional special viewings cost extra.
At a glance for visitors
Nearest station
25 min walk from JR Azuchi Station
Climb
Steep climb
Time neededEditors' estimate
About 45-90 minutes to loop the site (official estimate).
Admission
Adults 700 yen; children (high school age and under) 200 yen. No group or disability discounts. From July 29, 2026, until further notice, elementary and junior high students living in Shiga enter free (with a guardian). Soken-ji's occasional special viewing costs an extra 500 yen.
Hours
8:30-17:00 (last entry 16:00; varies by season)
Access
Partly open
The whole site belongs to Soken-ji; pay the entry fee at the reception to go in. The route climbs the Ote-michi to Nobunaga's mausoleum, the main enclosure and the keep site, then loops down past the Soken-ji site, pagoda and Nio-mon gate. No pets. There are no toilets inside the site. The footing is rough in many places; walking sticks are available by the reception.
Azuchi Castle was built on Mt. Azuchi (about 199 m), a free-standing hill that once jutted into Lake Biwa like a peninsula. It was closer to Kyoto than Gifu Castle and sat at a key point linking the Hokuriku and Tokai regions.[2][3]
02
Historical record
Built by Nobunaga from 1576
In January 1576 Oda Nobunaga began building the castle with his senior retainer Niwa Nagahide in overall charge, and moved here from Gifu the next month. While building stone walls, the keep and palaces, he also laid out a castle town, and in May 1579 he moved into the completed keep.[2][3]
03
Scholarly interpretation
Base for unification, prototype of later castles
Nobunaga built Azuchi as his base for unifying Japan. Unlike earlier castles built mainly of earth, the whole hill was clad in high stone walls with a tall keep on top, and the national heritage description calls it the prototype of later castles. The chronicle Shincho Koki records that the main enclosure had a room for receiving the emperor.[1][3]
04
Historical record
1582: burned after the Honnoji Incident
In June 1582 Nobunaga was killed at Honnoji in Kyoto by his retainer Akechi Mitsuhide. Soon afterward the keep and other buildings burned; the cause is not known. The castle was used for a while longer but was soon abandoned, and stone was carted off to build other castles nearby.[2][8]
05
Historical record
Buildings gone; walls and foundation stones remain
The keep and palaces are all gone, but the stone walls of the main and second enclosures, the stone steps, the keep base, wells and moat traces survive well. On the second enclosure is Nobunaga's mausoleum, where Hashiba Hideyoshi buried items that had belonged to him. The only old buildings left are not castle buildings but Soken-ji's pagoda and Nio-mon gate.[2][3][5]
06
Historical record
Ongoing study as a Special Historic Site
Azuchi became a Historic Site in 1926 and a Special Historic Site in 1952. The entire site belongs to Soken-ji temple and is maintained by the Azuchiyama Preservation Society. Shiga Prefecture excavated and restored the Ote-michi and other areas over 20 years from 1989, and since fiscal 2023 has been running new surveys and work under its "Phantom Azuchi Castle" restoration project.[2][3][7][8]
Shiga Prefecture starts a 20-year survey and restoration program[8]
Survey and restoration under the "Phantom Azuchi Castle" project begins[7]
Buildings and remains
The keep today
Keep lost
The keep completed in 1579 burned in 1582. The stone base and its foundation stones survive.
The site today
All of Mt. Azuchi is a Special Historic Site, owned by Soken-ji and run by the Azuchiyama Preservation Society; entry is paid. Stone walls, steps, the keep base and bailey sites remain on the hill, along with Soken-ji's temporary main hall, pagoda and Nio-mon gate.
Main buildings
Lost
Keep (tenshu)
Said to have had seven floors. Burned in 1582; foundation stones remain.[2][5]
Site only
Honmaru palace
Said to have included a room for receiving the emperor. Site only.[3]
Site only
Kurogane-mon gate site
Entrance to the core; walls of large stones remain.[3]
OriginalImportant Cultural Property
Soken-ji pagoda and Nio-mon gate
Temple, not castle, buildings. The pagoda dates from 1454.[3][6]
Key facts
Type
Castle
Setting
Mountain castle (yamajiro)built on a mountain; expect a climbEditorial article
Period
Medieval (c.1185–1570s), Early modern (1570s–1871)Editorial article
Keep (tenshu)
Keep lostthe castle had a keep, but it no longer stands (its stone base may remain)Editorial article
Built by
Oda NobunagaJapan Castle Foundation
Built
1576Japan Castle Foundation
Main lords
Oda clan, Akechi clanJapan Castle Foundation
Abandoned
1585Wikipedia (ja)
Remains to see
Keep base (tenshudai), Baileys / enclosures (kuruwa), Stone walls, Moats, Fortified gateways (koguchi)Editorial article
Designation
Historic Site (1926); Special Historic Site (Azuchi Castle ruins) (1952)Editorial article
Selection
Japan's 100 Fine Castles No. 54Japan Castle Foundation
Visiting
Access
Partly open
The whole site belongs to Soken-ji; pay the entry fee at the reception to go in. The route climbs the Ote-michi to Nobunaga's mausoleum, the main enclosure and the keep site, then loops down past the Soken-ji site, pagoda and Nio-mon gate. No pets. There are no toilets inside the site. The footing is rough in many places; walking sticks are available by the reception.
JR Azuchi StationJR Biwako Line (Special Rapid trains do not stop)
about 25 min walk · Steep climb
About 20-25 minutes on foot to the reception (the site says about 20, the city tourism site about 25); about 10 minutes by rental bicycle or 7 by taxi. From the reception you climb the stone steps of the Ote-michi.[5][4]
Checked: 2026-10-03
Hours and admission
Azuchi Castle site (entry reception)
Hours
8:30-17:00 (last entry 16:00; varies by season)
Closed
Open every day (may close in bad weather)
Admission
Adults 700 yen; children (high school age and under) 200 yen. No group or disability discounts. From July 29, 2026, until further notice, elementary and junior high students living in Shiga enter free (with a guardian). Soken-ji's occasional special viewing costs an extra 500 yen.[5][4]
Checked: 2026-10-03
Shiro-navi-kan (Azuchi Castle guidance center)
Hours
9:00-17:00
Closed
Mondays (except holidays), days after holidays, and New Year; open daily March 15 - November 30.
Admission
Adults 200 yen, elementary and junior high 100 yen, younger children free.[10]
Checked: 2026-10-03
By car / parking
About 25 minutes from the Yokaichi IC, 20 from the Gamo Smart IC, or 35 from the Ryuo IC on the Meishin Expressway. Free parking below the site (buses OK).[5]
About 45-90 minutes to loop the site (official estimate).
Steps, slopes and footing
The site is all slopes and stone steps with rough footing; wear sturdy shoes.[5]
Wheelchairs and strollers
The manager states the site is not barrier-free and that touring it by wheelchair is nearly impossible because of slopes and steps.[5]Checked: 2026-10-03
Toilets and rest
None inside the site; use the toilets at the guidance center next to the parking lot before entering.[5][11]
English signs / audio guide
No English information was found.
Seasons
Cherry blossoms in spring around the Ote-michi and Eto hill.[4]
Photography
Not confirmed
Works, closures and restrictions
For the castle's 450th anniversary, from July 29, 2026, Shiga-resident elementary and junior high students enter free until further notice (with a guardian).[4]Checked: 2026-10-03
Suggested routes
Loop of the castle site (official route) 90 min
Pay the entry fee at the reception
Climb the Ote-michi steps (retainers' residence sites on both sides, stone Buddhas in the steps)
At the top, turn right and pass the Kurogane-mon gate site
Stop at Nobunaga's mausoleum on the second enclosure
Cross the main enclosure to the keep site
Retrace your steps to the Soken-ji site, with views over Lake Nishinoko
Pass the pagoda and Nio-mon gate and walk down to the reception
City facility next to the parking lot, with a 1/7 model of the keep's upper floors and a VR film of the castle.[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
For Nobunaga fans, anyone curious about where Japan's castle keeps began, and walkers who like stone walls.
What makes it interesting
The straight Ote-michi steps and their stone Buddhas, the big stones of the Kurogane-mon walls, and the keep-base foundation stones. With no buildings left, the fun is imagining the size of the keep from the layout of stones.
Before you go
No keep survives; this is a site of walls and foundation stones. There is an entry fee and last entry is 16:00. No toilets inside and the steps are steep, so use the toilets below and wear good shoes. Special Rapid trains do not stop at Azuchi Station.
Ways to enjoy it
See the keep model and VR film at Shiro-navi-kan first, so you can picture what stood on the stones. From the keep site, take in the view over Lake Biwa and the inner lakes.
Photos
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Open questions
The cause of the keep's burning is debated and unknown.
"Seven floors, about 33 m tall" is the manager's (Soken-ji's) description; the keep's form is reconstructed from records, and several restoration proposals exist.
The Japan Castle Foundation classifies it as a mountain castle, while the site manager calls it a hill castle (hirayamajiro).
A 2019 notice from the manager gave last entry as 16:30 (17:00 in summer), but the current admission page and city tourism site say 16:00, which this article uses. English information and photo rules could not be confirmed.
Mont Blank richCC0Wikimedia Commons
