All 9 Important Cultural Property Buildings at a Glance

Hirosaki Castle has 9 Important Cultural Property buildings — more original surviving structures than almost any other castle in Japan. All were built in the Edo period and have never been reconstructed.

Important Cultural Property Original Keep

Hirosaki Castle Keep

One of Japan's 12 surviving original keeps ／ Interior closed — exterior fully viewable

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The Hirosaki Castle keep is a three-story original wooden structure built in 1810. It is one of Japan's 12 surviving original keeps (現存天守) — buildings that have stood continuously since the Edo period without reconstruction. The keep interior is currently closed due to ongoing preservation and structural reinforcement work, but the exterior can be viewed at close range.

🏰 The current keep is not the original
The original five-story keep built around 1611 was struck by lightning and burned down in 1627. For approximately 180 years, Hirosaki Castle had no keep at all. The current three-story keep was built in 1810 by the 9th domain lord, Tsugaru Yasuchika. To obtain shogunate approval — which restricted new keep construction — the Tsugaru clan submitted the building as a "corner turret." This political workaround is part of what makes Hirosaki's history fascinating.

Built	1810 (Bunka 7)
Structure	Three-story wooden keep
Designation	Important Cultural Property
Current status	Interior closed (from Nov 24, 2025 — several years). Exterior fully viewable.
Hikiya / Hikimodosu	In 2015, the keep was relocated approximately 77.62m from its original stone base for stone wall repair. It is currently being moved back (hikimodosu) to its original position.

📜 Keep base, stone walls & hikiya project — details Photos, panorama

📜 Keep Base & Hikiya Details

🏰 Why was the keep moved?
Over centuries, the stone walls beneath the keep had gradually bulged outward — a condition called harami. Left unrepaired, collapse was a real risk. In 2015, rather than dismantling the 400-ton wooden keep, engineers relocated the entire structure 77.62 meters to the center of the Honmaru. This was an extraordinarily rare preservation technique for a wooden castle keep, attracting widespread attention in Japan and abroad. The keep is now being moved back to its original position — a process called hikimodosu — which is underway in 2026.

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360° Panorama — On-site Experience Around the Keep & Honmaru

Three original corner turrets survive in the Nijomaru (Second Bailey), positioned at the southwest, southeast, and northeast corners. All three were built around 1611 and are designated Important Cultural Properties. Having three original corner turrets intact in one castle is rare in Japan.

All 3 surviving corner turrets — Hitsujisaru (SW), Tatsumi (SE), Ushitora (NE) ／ Tap to enlarge

📜 Each turret in detail — Hitsujisaru, Tatsumi, Ushitora Photos, panoramas, maps, history

📜 3 Corner Turrets — Individual Details

Hitsujisaru Turret (Southwest)

Direction	Southwest (Hitsujisaru)
Built	c. 1611 (Keicho 16) — original construction
Repair record	Repaired in Genroku 12 (1699) — documented on a ridge board found inside
Designation	Important Cultural Property (designated as Old National Treasure in 1937)
Status	Exterior viewable

🏰 Standing for over 400 years
A ridge board (munefuda) found inside documents a repair in 1699 — over 80 years after the castle was built. The fact that this repair was carefully recorded and the building preserved through the Edo period reflects the sustained commitment the Tsugaru clan had to maintaining these structures.

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360° Panorama — On-site Experience Around Hitsujisaru Turret

Hitsujisaru Turret location (Google Map)

Tatsumi Turret (Southeast)

Direction	Southeast (Tatsumi)
Built	c. 1611 (Keicho 16) — original construction
Repair record	Repaired in Kyoho 19 (1734) — documented on a ridge board found inside
Designation	Important Cultural Property
Status	Exterior viewable

🏰 Evidence of sustained maintenance through the Edo period
The 1734 repair record, combined with the 1699 repair of the Hitsujisaru Turret, shows that these buildings were regularly maintained throughout the Edo period — not simply left to stand on their own. This sustained care is a major reason they survive today.

Tap to enlarge

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360° Panorama — On-site Experience ① Around Tatsumi Turret

Tatsumi Turret location (Google Map)

Ushitora Turret (Northeast)

Direction	Northeast (Ushitora)
Built	c. 1611 (Keicho 16) — original construction
Repair record	No major repair records documented — considered the best-preserved of the three turrets
Designation	Important Cultural Property
Status	Exterior viewable

⚙ The northeast turret and the concept of kimon (demon gate)
In traditional Japanese architecture and castle planning, the northeast direction was called kimon — the "demon gate" — and was considered vulnerable to malevolent forces. Castles often placed special emphasis on fortifying this corner. The placement of the Ushitora Turret (Ushitora = northeast in the old zodiac compass) at precisely this corner reflects this spatial philosophy.

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360° Panorama — On-site Experience Around Ushitora Turret

Ushitora Turret location (Google Map)

Hirosaki Castle has 5 surviving original gates, all Important Cultural Properties. As of May 2026, two gates — Higashiuchimon and Kamenokomon — are undergoing preservation repair and are wrapped in scaffolding. Otemon, Minamiuchimon, and Higashimon are fully viewable.

5 original gates — Otemon, Minamiuchimon, Higashiuchimon, Higashimon, Kamenokomon ／ Tap to enlarge

📜 Each gate in detail — all 5 gates with panoramas & maps Photos, panoramas, maps, history

📜 5 Gates — Individual Details

Otemon Gate (Main South Gate)

Location	South face of Sannomaru — main entrance to Hirosaki Park
Built	c. 1611 (Keicho 16) — original construction
Repair record	Preservation repair carried out in fiscal years 2021–2022
Designation	Important Cultural Property
Status	Open and freely passable

🏰 The formal front gate for over 400 years
Otemon served as the official main entrance through which the domain lord and distinguished visitors would pass. In castle architecture, the main gate (otemon, 大手門) was designed not just for access but to project authority — its scale, positioning, and the space before it were carefully planned to impress and control visitors. The Information Center just inside is a recommended first stop.

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360° Panorama — On-site Experience Around Otemon Gate

Otemon Gate location (Google Map)

Minamiuchimon Gate (South Inner Gate)

Location	South face, inner side of Nijomaru
Built	c. 1611 (Keicho 16) — original construction
Repair record	Subject to preservation repair in the Reiwa period
Designation	Important Cultural Property
Status	Open and viewable

🏰 The masugata defensive system
Minamiuchimon was part of a masugata — a square enclosure between two gates that forced attackers to stop, turn, and expose themselves to fire from above. This design, common in major Japanese castles, meant that even if an enemy broke through the outer gate, they would be trapped in the enclosure before reaching the inner gate. Hirosaki preserves several examples of this defensive logic.

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360° Panorama — On-site Experience Around Minamiuchimon Gate

Minamiuchimon Gate location (Google Map)

Higashiuchimon Gate (East Inner Gate / Nijomaru)

Location	East face, inner side of Nijomaru
Built	c. 1611 (Keicho 16) — original construction
Repair record	Preservation repair: Sep 12, 2025 – approx. Mar 5, 2027
Designation	Important Cultural Property
Status	Preservation repair in progress — passable but photographing difficult

Higashiuchimon Gate is currently undergoing preservation repair (Sep 12, 2025 – approx. Mar 5, 2027). The gate can be passed through, but the entire structure is covered in scaffolding and sheeting, making exterior photography difficult. It will be fully viewable again after the repair is complete.

🏰 Note on name confusion
"Higashiuchimon" (East Inner Gate, Nijomaru) and "Higashimon" (East Gate, Sannomaru) are two separate gates. The current preservation repair applies to Higashiuchimon — not Higashimon. Higashimon is viewable normally.

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360° Panorama — On-site Experience Around Higashiuchimon Gate

Higashiuchimon Gate location (Google Map)

Higashimon Gate (East Gate, Sannomaru)

Location	East face of Sannomaru
Built	c. 1611 (Keicho 16) — original construction
Repair record	Designated Important Cultural Property in 1953 (additional designation). Current preservation repair applies to Higashiuchimon and Kamenokomon — not this gate.
Designation	Important Cultural Property
Status	Exterior viewable

🔍 Easy to confuse with Higashiuchimon
Higashimon (Sannomaru East Gate) and Higashiuchimon (Nijomaru East Inner Gate) have similar names in Japanese. The current preservation repair is for Higashiuchimon, not Higashimon. Higashimon is fully viewable.

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360° Panorama — On-site Experience Around Higashimon Gate

Higashimon Gate location (Google Map)

Kamenokomon Gate / Kitamon (North Gate)

Location	North face of Kitanokaku (North Enclosure)
Built	c. 1611 (Keicho 16) — original construction
Repair record	Preservation repair: Sep 12, 2025 – approx. Mar 5, 2027
Designation	Important Cultural Property
Status	Preservation repair in progress — passable but photographing difficult

Kamenokomon Gate is currently undergoing preservation repair (Sep 12, 2025 – approx. Mar 5, 2027). The gate can be passed through, but the structure is covered in scaffolding and sheeting, making photography difficult.

📜 Local legend: the "escape gate"
According to local tradition, Kamenokomon was used as a secret rear exit — a gate through which the lord could quietly leave the castle unnoticed. In castle planning, the north gate (karamete) typically served as the rear entrance, used for supply routes and retreat paths rather than formal arrivals. Whether or not the legend is accurate, the gate's position and function align with this tradition.

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360° Panorama — On-site Experience Around Kamenokomon Gate

Kamenokomon Gate location (Google Map)

The Yoriki Guardhouse is not one of the 9 Important Cultural Property buildings, but it is a rare surviving example of an Edo-period guardhouse structure within a Japanese castle complex. It stands independently — not attached to any gate — in the east side of the Nijomaru.

Reference Building Not in 9 ICP

Yoriki Guardhouse (Nijomaru East Gate Yoriki Bansho)

The only surviving yoriki guardhouse at Hirosaki Castle ／ Once located at 12 positions throughout the castle

A yoriki was a samurai who assisted higher-ranking retainers — a role roughly equivalent to a deputy constable. Their guardhouses (bansho) were positioned at key points throughout the castle grounds, not adjacent to specific gates. During the domain period, 12 such guardhouses stood within Hirosaki Castle. This is the only one that survives.

🏰 Relocated twice — the long journey to its current position
The timber framing of this building closely resembles that of the Sannomaru East Gate (Higashimon), suggesting it was built using early Edo-period materials and later modified in the mid-Edo period. After the domain was abolished, it was not demolished — and around 1915 it was relocated for the first time. From 1979, over a period of three years and under the guidance of the Agency for Cultural Affairs, it was carefully restored and moved to its current location. The fact that a small guardhouse was preserved across two relocations and over 400 years speaks to the exceptional care taken at Hirosaki Castle.

Type	Castle security facility (guardhouse)
Location	East side of Nijomaru (current position is post-relocation)
Built	Estimated: early Edo-period materials, modified mid-Edo period
Relocation record	Relocated c. 1915; then again 1979–1982 under Agency for Cultural Affairs guidance
Designation	Not included in the 9 Important Cultural Property buildings — reference building
Status	Viewable

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