Okazaki Castle

岡崎城 · Okazaki-jo

C Defense 62/100

D Defense 45/100

The birthplace of Tokugawa Ieyasu — Japan's great unifier — makes this modest concrete reconstruction a pilgrimage site for anyone who loves Sengoku history.

#45 — 100 Famous Castles

Quick Facts

Admission: ¥200
Hours: 09:00 – 17:00
Nearest Station: Okazaki-koen-mae Station (Meitetsu Nagoya Main Line) or Higashi-Okazaki Station (Meitetsu)
Walk from Station: 5 min
Time Needed: 1.5–2 hours (castle + park + Toshogu). Add 1 hour for Hatcho Miso factory tour.

Children (elementary school and under) ¥100. Okazaki Park (surrounding grounds) is free. The ¥200 fee is for the reconstructed tower museum.

Why Visit Okazaki Castle?

Okazaki Castle's concrete tower is uninspiring architecturally, but the historical significance of Tokugawa Ieyasu's birthplace elevates the entire experience. The museum inside covers Ieyasu's remarkable life story clearly and engagingly. Add the Toshogu shrine in the park grounds, the proximity to the Hatcho Miso factory, and the attractive castle park, and Okazaki makes for a genuinely rewarding half-day. History lovers treating this as a pilgrimage to where Japan's most consequential leader was born will find the visit deeply satisfying.

Highlights — What to Look For

Tokugawa Ieyasu's Birthplace

Okazaki Castle is where Tokugawa Ieyasu was born on January 31, 1543 — the man who would unify Japan under the Tokugawa shogunate and whose descendants would rule for 265 years. For Japanese visitors, this makes Okazaki a place of profound historical pilgrimage, on par with birthplaces of world-historical figures elsewhere. Standing in the castle park, you are in the exact place where the founder of the longest-lasting Japanese dynasty drew his first breath.

The Birthplace of Japanese Democracy — Miso and Fireworks

Okazaki is also famous throughout Japan as the origin of Hatcho Miso — a deeply fermented, intensely flavored soybean paste produced here since the 14th century and closely associated with the warrior culture of the region. The city also claims Japan's first major fireworks display, attributed to Tokugawa Ieyasu himself celebrating the birth of his first son. Hatcho Miso factory tours and the national fireworks competition (held annually on the first Saturday of August) draw visitors who have no interest in the castle at all.

The Ieyasu Grand Procession

Every year in April, Okazaki hosts the 'Ieyasu-ko Goudou-Gyouretsu' — a massive historical parade recreating Tokugawa Ieyasu's life with hundreds of participants in full period armor and costume. The event fills the city center and castle park with elaborately dressed participants, making Okazaki one of the best places in Japan to experience large-scale Sengoku-period costume pageantry.

How This Castle Was Built to Fight

Visitor Tip

Okazaki Castle is a pleasant and easy stop — the park is attractive, the tower is compact, and the Tokugawa Ieyasu connection gives every exhibit historical weight. The museum inside covers Ieyasu's early life at Okazaki in engaging detail. Allow extra time if you want to walk the full park and explore the Toshogu shrine (dedicated to Ieyasu) within the castle grounds.

Castle Type

hirajiro

Flatland castle — built on a low natural rise at the confluence of the Oto and Otogawa rivers, with river water forming part of the natural defense

Layout Type

renkaku

Compound style — main tower compound with surrounding secondary compounds, rivers and moats completing the defensive perimeter

Main Tower (Tenshu)

Concrete reconstruction (1959) — the original castle and main tower were demolished by the Meiji government in 1873. The current three-story concrete tower was reconstructed in 1959 and contains a castle history museum with particular focus on Tokugawa Ieyasu.

25m tall 3 floors above ground , 1 below

Stone Walls (Ishigaki)

nozurazumi — Natural stone stacking — surviving stone walls around the main compound use rough natural stone characteristic of late Sengoku / early Edo construction

Stone walls survive around the main compound area, providing an authentic setting for the reconstructed tower. The stone walls and the moat system give Okazaki Park its historical atmosphere, even though the tower itself is a 1959 concrete reconstruction.

Moats

The castle's moat system was augmented by the natural course of the Oto and Otogawa rivers. The inner moat survives and the river confluence remains visible, giving the site its historic defensive character.

Key Defensive Features

River Confluence Position

The castle's position at the confluence of two rivers provided natural defensive water barriers on multiple sides — attackers approaching from the river side faced a water crossing before reaching the walls.

Surviving Stone Walls and Moat

The stone walls around the main compound and the inner moat survive from the original construction, providing genuine historical fabric around the concrete tower reconstruction.

Tactical Defense Simulator

Masugata Gate (Square Trap)

The Deadliest Gate in Japan

⚔ Attacking Force

1,000 / 1,000 troops

Phase 1: Approach

The attacking force crosses the moat and approaches the outer gate. Defenders hold fire, allowing the enemy to commit.

Castle Defense Layers

River and Outer Moat Defenses

· Oto River (natural western barrier)· Otogawa River (natural eastern barrier)· Outer moat system

Second and Third Compounds

· Intermediate stone walls· Gate complexes· Administrative buildings

Main Compound (Honmaru)

· Surviving stone walls· Inner moat· Reconstructed concrete tower (1959)

Historical Context — Okazaki Castle

Okazaki Castle's river confluence position made it moderately difficult to attack directly — two rivers created natural barriers on opposing sides. However, the flat terrain and lack of significant elevation meant it could not dominate the surrounding area the way mountain castles could. The castle's importance derived more from its political and symbolic value as the Tokugawa family home than from outstanding military engineering.

The Story of Okazaki Castle

Originally built 1455 by Saigo Tsuratatsu

Current form 1542 by Matsudaira Hirotada (Ieyasu's father)

1455

Saigo Tsuratatsu builds the first fortification on the site. The Matsudaira clan — ancestors of the Tokugawa — later acquires and expands the castle as their clan headquarters.

1543

Tokugawa Ieyasu is born at Okazaki Castle on January 31, the son of Matsudaira Hirotada. The infant Ieyasu is subsequently sent as a hostage first to the Oda clan, then to the Imagawa — a common practice for small-domain lords seeking protection from larger neighbors.

1560

After the Battle of Okehazama — where Oda Nobunaga destroys the Imagawa clan in a surprise attack — Ieyasu (then 17) seizes the opportunity to return to Okazaki Castle and assert independence. This is the effective beginning of his rise to power.

1570

Ieyasu moves his base from Okazaki to Hamamatsu, but Okazaki remains a key secondary castle under his son Nobuyasu. Nobuyasu is later ordered to commit suicide by his father on suspicion of disloyalty — one of the most painful episodes of Ieyasu's life.

1873

The Meiji government demolishes Okazaki Castle as part of national military modernization. The entire castle complex including the main tower is removed.

1959

Okazaki City constructs a concrete reconstruction of the main tower as a civic landmark. The museum inside focuses on Tokugawa Ieyasu's life and legacy.

Seen This Castle Before?

Dobutsu no Okazaki Castle (Various NHK Tokugawa dramas)

Okazaki Castle appears in virtually every NHK historical drama covering Tokugawa Ieyasu's early life — the scenes of his birth and return from hostage captivity are among the most revisited episodes in Japanese historical drama.

Doujidai (NHK Taiga Drama, 2023 — Dobutsu no Omazaki)

The 2023 NHK Taiga Drama 'Doujidai' featuring Tokugawa Ieyasu prominently featured Okazaki Castle during episodes covering his early life and return from Imagawa captivity.

Did You Know?

The young Tokugawa Ieyasu spent most of his childhood as a hostage — first with the Oda clan, then with the Imagawa. He did not live at Okazaki Castle himself until his late teens, meaning the castle is more significant as a birthplace than a childhood home.
Okazaki is also famous for Hatcho Miso — a deeply fermented soybean paste produced here for over 600 years. The Hatcho Miso factory (Kakukyu) near the castle offers tours showing the enormous cedar barrels (up to 6 tons of miso each) pressed under heavy stone weights. The miso's intense, earthy flavor is distinctly different from lighter varieties.
The annual Okazaki fireworks competition (August) is one of Japan's premier fireworks events, drawing over 400,000 spectators. The tradition allegedly dates to Tokugawa Ieyasu himself, who celebrated the birth of his first son Nobuyasu with fireworks launched from the castle grounds.

Score Breakdown

Tourism Score

C 62/100

Accessibility 16 /20
Foreign-Friendly 11 /20
Historical Value 18 /20
Visual Impact 10 /20
Facilities 7 /20

Defense Score

D 45/100

Natural Position 9 /20
Wall Complexity 9 /20
Layout Strategy 10 /20
Approach Difficulty 8 /20
Siege Resistance 9 /20

Planning Your Visit

Best Time to Visit

Spring (cherry blossoms in Okazaki Park are spectacular — among Aichi's best). The Ieyasu Gyouretsu parade in April is unmissable for history enthusiasts.

Time Needed

1.5–2 hours (castle + park + Toshogu). Add 1 hour for Hatcho Miso factory tour.

Insider Tip

Don't leave without visiting the Toshogu shrine within the castle park grounds — it is dedicated to Tokugawa Ieyasu and provides a more intimate historical atmosphere than the concrete tower. Then walk or taxi to the Hatcho Miso factory (Kakukyu), 15 minutes from the castle — the free factory tour showing the enormous fermentation barrels under stone weights is one of the most distinctive food experiences in Aichi Prefecture.

Getting There

Nearest station: Okazaki-koen-mae Station (Meitetsu Nagoya Main Line) or Higashi-Okazaki Station (Meitetsu)

Walk from station: 5 minutes

Bus: Bus from JR Okazaki Station to the castle. Meitetsu Okazaki-koen-mae Station is directly adjacent.

Parking: Paid parking in Okazaki Park. The castle is very accessible by both train and car.

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Admission

Adult ¥200

Child ¥100

Children (elementary school and under) ¥100. Okazaki Park (surrounding grounds) is free. The ¥200 fee is for the reconstructed tower museum.

Opening Hours

Open 09:00 – 17:00

Last entry 16:30

Closed December 29–31. Open all other days year-round.

Facilities

English guides
Audio guide
Wheelchair access
Restrooms
Gift shop
Food nearby

Official website

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D Tourism 40/100

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Frequently Asked Questions

How do I get to Okazaki Castle?

The nearest station is Okazaki-koen-mae Station (Meitetsu Nagoya Main Line) or Higashi-Okazaki Station (Meitetsu). It is approximately a 5-minute walk from the station. Bus from JR Okazaki Station to the castle. Meitetsu Okazaki-koen-mae Station is directly adjacent. Parking: Paid parking in Okazaki Park. The castle is very accessible by both train and car.

How much does Okazaki Castle cost to enter?

Adult admission is ¥200. Children: ¥100. Children (elementary school and under) ¥100. Okazaki Park (surrounding grounds) is free. The ¥200 fee is for the reconstructed tower museum.

Is Okazaki Castle worth visiting?

What are the opening hours of Okazaki Castle?

Okazaki Castle is open 09:00 – 17:00 (last entry 16:30). Closed December 29–31. Open all other days year-round.

How long should I spend at Okazaki Castle?

Plan on spending 1.5–2 hours (castle + park + Toshogu). Add 1 hour for Hatcho Miso factory tour. at Okazaki Castle. Don't leave without visiting the Toshogu shrine within the castle park grounds — it is dedicated to Tokugawa Ieyasu and provides a more intimate historical atmosphere than the concrete tower. Then walk or taxi to the Hatcho Miso factory (Kakukyu), 15 minutes from the castle — the free factory tour showing the enormous fermentation barrels under stone weights is one of the most distinctive food experiences in Aichi Prefecture.