- How to Explore Kochi Castle's Main Keep: Route, Highlights, and Time Required
- Explore the only surviving Edo-period castle keep and palace in Japan. This guide covers the route, structure, highlights, and tips for touring Kochi Castle's Main Keep.
Discover the Best of Kochi Castle: What to Know Before You Go
Kochi Castle is one of Japan’s twelve remaining original castles, preserving its Edo-period keep, palace, and main gate in their original form.
It is the only castle in the country where all three major structures remain intact, making it a site of immense historical value.
This article introduces the key highlights of Kochi Castle, including iconic buildings, seasonal events, and night illuminations—perfect for anyone planning a visit.
Kochi Castle
Construction of Kochi Castle began in 1601 by Yamauchi Kazutoyo, the first lord of the Tosa Domain, and was completed in 1611.
Though much of it was destroyed by a major fire in 1727, the castle was rebuilt in the mid-18th century into the structure we see today.
Its most notable feature is that the main keep, Honmaru Palace, and Otemon Gate all remain standing.
This combination is unique to Kochi Castle, making it architecturally and historically rare.
In 1959, the castle grounds were designated a National Historic Site, and 15 buildings including the keep, palace, and gates were named Important Cultural Properties.
- Business hours
- 9:00 am - 5:00 pm (last admission at 4:30 pm)
- Regular holiday
- December 26 – January 1
- Fee
- 500 yen (Free for those under 18 with student ID)
- Telephone number
- +081-88-824-5701
- Official site
- https://kochipark.jp/kochijyo/
- Parking
- Parking available on - site (7:30 am–6:30 pm / 370 yen for the first hour, then 110 yen per additional 30 minutes)
- How to visit
- About 25 minutes on foot from JR Kochi Station, or 5 minutes on foot from Tosaden tram stop “Kochijo - mae”
- Address
- 1 - 2-1 Marunouchi, Kochi City, Kochi Prefecture 780 - 0850
The Main Keep: A Symbol of Beauty and Prestige from the Late Edo Period
Kochi Castle’s main keep is one of Japan’s rare original twelve surviving keeps.
Built in the late Edo period, it emphasizes the lord’s prestige and elegance over military defense.
The contrast of white plaster walls and black roof tiles, combined with its bold stature and perfectly proportioned stone walls, makes it a powerful symbol of Kochi.
Whether seen from afar or viewed up close, the keep has an undeniable visual appeal that captures every visitor’s attention.
The interior is open to the public, and the top floor offers sweeping views over Kochi City.
Read more about Kochi Castle Main Keep
Honmaru Palace (Kaitokukan): A Rare Shoin-Style Edo-Era Residence
Kochi Castle’s Honmaru Palace, known as “Kaitokukan,” is a rare surviving example of Shoin-style architecture.
Only two castles in Japan have their original Honmaru Palace intact—Kochi Castle and Kawagoe Castle—making this an exceptionally rare structure.
The interior includes reception rooms, an entrance hall, a tea room, and separate chambers, all preserving the refined aesthetics of the period through features like shoji screens, fusuma sliding doors, and elegant verandas.
Visitors can explore this dignified space just as it would have appeared during the Edo period, where feudal lords conducted official duties and received distinguished guests.
Read more about Honmaru Palace (Kaitokukan)
Otemon Gate: The Grand Entrance Linking Castle and Town
Otemon Gate was built in the 1650s as the main entrance to Kochi Castle and is now designated an Important Cultural Property. Its sturdy design and dignified appearance make it a fitting entrance from the castle town to the inner grounds.
One of the most iconic views of Kochi Castle is looking through Otemon Gate toward the main keep—a popular photo spot among visitors.
Located right next to the modern city center, this gate uniquely blends historical architecture into everyday urban scenery.
For Ninja Fans: The Only Remaining “Anti-Ninja Spikes” in Japan
Encircling the main keep of Kochi Castle is a rare defense feature known as “shinobigaeshi,” or anti-ninja spikes. These projections were installed along the base of the outer wall to prevent intruders from climbing up.
While similar devices were used in a few Edo-period castles, Kochi Castle is the only one where they remain intact today.
From afar, they may appear subtle, but a closer look reveals just how formidable these defenses were.
This ingenious feature reflects real security concerns from the time and offers a tangible look into the castle’s defensive strategies.
It’s a must-see highlight for ninja enthusiasts and castle fans, providing an up-close look at the authentic defense system once used to ward off stealthy intruders.
The Path to the Main Keep: Filled with Historic Highlights
The walk to Kochi Castle’s main keep is lined with historic gates like Tsume-mon and Kurogane-mon, as well as dynamic stone walls.
Gently sloped paths, stone steps, and curved walkways were carefully designed both for defense and to provide changing scenery with every step.
As you ascend, the view gradually opens up and the main keep comes into sight, making the approach a uniquely immersive experience at Kochi Castle.
Read more about Route to the Main Keep and Highlights Along the Way
One of Japan’s Three Great Night Castles: Kochi Castle Illuminated
Kochi Castle is recognized alongside Osaka Castle and Takada Castle as one of the “Three Great Night Castles of Japan.” After sunset, the main keep, Otemon Gate, and other structures are beautifully illuminated, revealing a different side of the castle.
The view of the glowing main keep framed by Otemon Gate is especially popular as a nighttime photo spot. Soft lighting highlights the stone walls and trees, creating a serene and elegant nighttime scene.
Kochi Castle Hanakairo: A Spring Night Fantasy of Cherry Blossoms and Light
The annual spring event “Kochi Castle Hanakairo” is a limited-time illumination that transforms the castle grounds into a dreamlike spectacle. The main keep and Otemon area are lit with cherry blossoms, traditional umbrellas, and lanterns.
The event sometimes features performances of traditional dance and court music, adding a festive atmosphere to the historical setting. It’s a perfect opportunity to enjoy Kochi Castle in a truly magical light.
Kochi Castle Museum of History: A Cultural Hub with Exhibits and City Views
Located immediately east of Kochi Castle, the Kochi Castle Museum of History offers a deep dive into the Tosa Domain’s legacy and local culture.
Exhibits include historical letters, old maps, armor, and furnishings, with both permanent and rotating special exhibitions.
On the third floor, visitors can relax in a glass-walled observation lounge with views of the castle’s main keep.
A café in the museum also serves light meals made with local ingredients, making it an ideal spot for both cultural exploration and a relaxing break during your visit.
Read more about Kochi Castle Museum of History
Day or Night, Kochi Castle Is Full of Wonders
Kochi Castle is the only remaining Japanese castle where the original main keep, Honmaru Palace, and Otemon Gate still stand, giving it immense historical value.
Throughout the grounds, you’ll find countless architectural highlights, defensive designs, and details from the Edo period.
In addition to its cultural significance, Kochi Castle is also known for its beauty in every season, with cherry blossoms in spring and night illuminations offering a different atmosphere.
Make sure to visit Kochi Castle to experience its rich history and stunning scenery in every light.
