Kubota Castle (Akita, Satake Clan): A Thorough Explanation of the History and Highlights of This Famous Castle Without Stone Walls
Located in the heart of Akita City, Akita Prefecture, Kubota Castle is a flatland castle built by Satake Yoshinobu during the Keicho era. Currently, it is a popular park known to citizens as Senshu Park and is the 9th of Japan’s Top 100 Castles. Its unique structure, lacking stone walls and a keep, is extremely rare for a castle built during the Keicho castle-building boom, and it features a defensive system centered on earthworks. This article provides a comprehensive explanation of Kubota Castle, from its history and architectural features to the Satake clan’s rule and current highlights.
Overview of Kubota Castle
Kubota Castle (Kubota-jo) was a Japanese castle located near Senshu Park in Akita City, Akita Prefecture (formerly Kubota, Akita District, Dewa Province, now Ugo Province). Although not designated as a historical site, it is designated as a scenic spot by Akita City as “Senshu Park (Kubota Castle Ruins)” and is also selected as one of Japan’s Top 100 Castles.
Basic Information
- Year of Construction: Construction began in Keicho 8 (1603), completed in Keicho 9 (1604)
- Builder: Satake Yoshinobu (First Lord of Akita Domain)
- Castle Structure: Hilltop Castle
- Kokudaka (Rice Production Value): 205,800 koku
- Duration: 267 years, from Keicho 7 (1602) to Meiji 2 (1869) (Return of Domains to the Emperor)
- Successive Lords: 12 generations of the Satake clan
- Current State: Developed as Senshu Park, with the corner turret and main gate restored.
Kubota Castle was built utilizing a natural plateau called Shinmeiyama. Initially, it was written as “Kubota Castle,” but between 1633 (Kanei 10) and 1645 (Shoho 2), its name was changed to “Kubota Castle.”
History of Kubota Castle
Background of the Satake Clan’s Relocation and Castle Construction
The history of Kubota Castle begins with the Battle of Sekigahara. The Satake clan was a branch of the Seiwa Genji clan and a prestigious daimyo family that held sway over Hitachi Province (present-day Ibaraki Prefecture) from the Sengoku period to the reign of Toyotomi Hideyoshi. The Satake clan, descended from the Genji, is one of the oldest daimyo families in Japan.
In the Battle of Sekigahara in 1600 (Keicho 5), Satake Yoshinobu did not clearly support Tokugawa Ieyasu’s Eastern Army, instead adopting an ambiguous stance. As a result, in 1602 (Keicho 7), by order of the Tokugawa Shogunate, he was ordered to drastically reduce his territory and be transferred from Hitachi Province (540,000 koku) to Akita in Dewa Province (205,800 koku).
In September of the same year, Yoshinobu entered Tsuchizaki Minato Castle (the former residence of the Akita clan), but Minato Castle was cramped and inadequately defended. Therefore, he decided to build a new castle on Shinmeiyama, where the current Senshu Park is located.
From Construction to Completion
Construction of Kubota Castle began in May 1603 (Keicho 8). It was designed as a flatland castle with multiple enclosures, skillfully utilizing the natural terrain of Shinmeiyama.
In August of the following year, 1604 (Keicho 9), the first lord of the domain, Satake Yoshinobu, entered Kubota Castle and designated it as his main castle. Minato Castle, the former residence of the Akita clan, the former lords of the domain, was abandoned at this point. However, although the main castle structure was completed relatively early, the overall construction period, including the castle town, spanned approximately 30 years.
Kubota Castle Throughout the Edo Period
Kubota Castle served as the residence of the Satake clan, the 200,000-koku Akita Domain, for 267 years across 12 generations, from 1602 (Keicho 7) until the return of the domains to the Emperor in 1869 (Meiji 2). During this time, the castle developed as the center of Akita Domain administration, and the castle town flourished as the economic and cultural center of northern Dewa Province.
Throughout the Edo period, Kubota Castle was not subjected to major warfare. However, damage from fires is recorded several times. In particular, the main keep was repeatedly destroyed and rebuilt due to fires.
After the Meiji Restoration
After the Meiji Restoration, Kubota Castle was abandoned following the return of the domains to the Emperor. In the Meiji era, many buildings were demolished, and the castle ruins were developed into a park. In 1896 (Meiji 29), it was opened to the public as “Senshu Park,” becoming a place of relaxation for the citizens of Akita.
In 1989 (Heisei 1), the corner turret of the main keep was restored, and in 2001 (Heisei 13), the main gate of the second keep was restored. These restorations allow visitors to imagine the appearance of Kubota Castle in its heyday.
Key Figure of Kubota Castle: Satake Yoshinobu
Life of Satake Yoshinobu
Satake Yoshinobu (1570-1633) was the first lord of the Akita Domain, who built Kubota Castle and laid the foundation for the domain. Born as the eldest son of Satake Yoshishige, a Sengoku daimyo of Hitachi Province, he served Toyotomi Hideyoshi and unified Hitachi Province.
Yoshinobu was a military commander skilled in both military and literary arts, and particularly adept at political maneuvering. His ambiguous stance at the Battle of Sekigahara ultimately resulted in a reduction of his territory, but this decision is said to have been a difficult choice made to ensure the survival of the Satake family.
Establishing Domain Administration in Akita
After the transfer to his new domain, Yoshinobu dedicated himself to establishing a solid foundation for his domain administration in Akita. In parallel with the construction of Kubota Castle, he implemented a wide range of measures, including the development of a castle town, the reorganization of his retainers, land surveys within the territory, and industrial development.
Of particular note is his relocation of many retainers, artisans, and merchants from Hitachi Province. This brought new technologies and culture to Akita, and the castle town rapidly developed. Under Yoshinobu’s rule, the Satake clan succeeded in establishing a firm foundation in Akita.
The 12-Generation Reign of the Satake Clan
From the first lord, Yoshinobu, to the twelfth lord, Yoshitaka, the Satake clan ruled the Akita Domain for 267 years. During this time, the domain maintained relatively stable governance and contributed to the cultural and economic development of Akita. In particular, during the reign of the eighth lord, Satake Yoshiatsu, domain reforms were implemented, and efforts were made to rebuild the finances.
Features and Highlights of Kubota Castle
Unique Structure Without Stone Walls
The most distinctive feature of Kubota Castle is that, unusually for a castle built during the Keicho era’s castle-building boom, it almost completely avoids the use of stone walls. Instead, a defensive system centered on earthen ramparts was adopted.
There are several theories as to why this structure was chosen:
- Economic reasons: Due to a reduction in territory resulting from a change of domain, there was a lack of financial resources, and it was necessary to keep the cost of stone wall construction down.
- Geographical reasons: Securing high-quality stone was difficult around Akita.
- Strategic reasons: In the peaceful early Edo period, economic efficiency was prioritized over practical defense.
- Technical reasons: Defense using earthen ramparts was a traditional castle-building technique of the Tohoku region and was well-suited to the local climate and terrain.
Earthen ramparts, when combined with moats, formed an effective defensive line and provided defensive capabilities comparable to stone walls. Even today, parts of the earthen ramparts remain in Senshu Park, allowing us to confirm their large scale.
Reasons why a keep was not built
Another characteristic of Kubota Castle is that a keep was not built. This was also unusual for a newly built castle at the time.
Reasons for the absence of a keep:
- Consideration for the Shogunate: Due to the delicate position after the Battle of Sekigahara, the castle was designed to be modest to avoid provoking the Tokugawa Shogunate.
- Economic constraints: Financial difficulties due to the reduction in territory left no room for the construction of a keep.
- Prioritization of practicality: Prioritization was given to the development of palaces and turrets for practical work, rather than a keep, which was a symbol of authority.
Instead of a keep, the main enclosure housed a building called the “Odashi Shoin,” which served as the administrative center of the domain. Turrets were also strategically placed throughout the castle, serving as surveillance and defense.
Defense system with multiple enclosures
Kubota Castle utilized the topography of Mt. Shinmei, with a layout that arranged multiple enclosures, including the second and third enclosures, centered around the main enclosure. Each enclosure was separated by earthworks and moats, forming a tiered defensive line.
Main Enclosure Structure:
- Honmaru: The central area of the castle, where the lord’s office (Odashi Shoin) and corner turrets were located.
- Ninokuruwa: Surrounding the outside of the Honmaru, where the residences of senior retainers and some administrative functions were located.
- Sannomaru: An even further outer defensive line, where the residences of the retainers were lined up.
- Obi-kuruwa: Enclosures that served as passageways connecting each enclosure.
These enclosures were arranged utilizing natural elevation differences, making them difficult for attackers to conquer.
Osumi-yagura (Corner Turret)
The Osumi-yagura currently standing in the Honmaru of Senshu Park was restored in 1989. Originally a turret built in the northwest corner of the Honmaru, it was a particularly important defensive point within the castle.
The restored corner turret has a three-story, three-tiered structure, and its interior is open to the public as an exhibition facility. From the top floor, you can enjoy a panoramic view of Akita city, experiencing the same scenery that the former castle lords gazed upon. The exhibition introduces materials related to the history of Kubota Castle and the Satake clan, deepening your understanding of the castle.
Opening Hours and Fees:
- Opening Hours: 9:00 AM – 4:30 PM (may vary depending on the season)
- Admission Fee: Approximately 100 yen for adults (subject to change)
- Closed: New Year’s holidays, etc.
Main Gate (Omotemon)
The restored main gate in the second bailey was completed in 2001. This gate played an important role as the main entrance to the second bailey and has a dignified structure in the style of a turret gate.
In the restoration, an attempt was made to reproduce it as faithfully as possible, based on old drawings and the results of archaeological excavations. Currently, it is one of the main attractions of Senshu Park and is visited by many tourists. Earthen ramparts remain around the main gate, allowing visitors to experience the atmosphere of the castle in its heyday.
Remains of Earthen Ramp and Moat
Within Senshu Park, remnants of earthen ramparts and moats from the Kubota Castle era remain in various places. The earthen ramparts around the main keep, in particular, are well-preserved and are valuable remains that allow visitors to experience the unique defensive system of Kubota Castle, which did not utilize stone walls.
Some of the earthen ramparts reach several meters in height, and their sheer scale is astonishing. Although parts of the moat have been filled in, information boards showing the original layout have been installed, providing clues to understanding the overall structure of the castle.
Development as Senshu Park
Since opening as Senshu Park in 1896 (Meiji 29), the Kubota Castle ruins have been a beloved place of relaxation for the citizens of Akita. Currently, it is known as a famous cherry blossom viewing spot, and in spring, approximately 730 Somei Yoshino cherry trees bloom, attracting many visitors.
Within the park, in addition to the remains of Kubota Castle, the Akita Prefectural Museum of Art and the Akita City Satake Historical Museum are also located nearby, making it a comprehensive tourist spot where visitors can learn about history and culture. The park is maintained to allow visitors to enjoy nature in all four seasons, and despite being in the heart of Akita City, it maintains an environment surrounded by lush greenery.
Development of the Castle Town and Present-day Akita City
Formation of Kubota Castle Town
In parallel with the construction of Kubota Castle, Satake Yoshinobu proceeded with the construction of the castle town. Samurai, merchants, and artisans who migrated from Hitachi Province formed a new town, which developed into the economic and cultural center of Akita.
The castle town was planned and laid out around the castle, with samurai residences, merchant districts, and temple/shrine areas clearly separated. In particular, commerce flourished in the merchant districts, functioning as a hub for the distribution of goods in Akita. Furthermore, temples and shrines gathered from various regions were strategically positioned to function as part of the defensive line.
Industry and Culture of the Akita Domain
Under the rule of the Satake clan, the Akita Domain developed various industries. In particular, efforts were made to strengthen the domain’s economic base through mining development (such as the Innai Silver Mine), forestry, and agricultural improvement.
Culturally, unique cultures such as Akita Rangaku (Akita-style painting) and Akita Manzai (Akita-style comedy) were nurtured. Moreover, the culture brought by the Satake clan from Hitachi Province merged with local culture, forming a unique cultural sphere of Akita.
Legacy to the Present-Day Akita City
Akita City, which originated as a castle town of Kubota Castle, continues to develop as the capital of Akita Prefecture. Some of the town layout from the castle town era is still preserved in the current city center, allowing one to feel the continuity of history.
Senshu Park (Kubota Castle Ruins) is located in the heart of Akita City and is beloved by its citizens as a symbol of the city. Furthermore, the legacy of the Satake clan is an important element of Akita City’s identity and is utilized in various cultural projects and tourism promotion efforts.
Access and Tourist Information
Access to Kubota Castle Ruins (Senshu Park)
Public Transportation:
- Approximately 10 minutes on foot from JR Akita Station
- Approximately 700m from Akita Station West Exit to the entrance of Senshu Park
- Immediately after alighting at “Senshu Park Entrance” bus stop on the Akita Chuo Kotsu bus line
By Car:
- Approximately 15 minutes from Akita Chuo IC on the Akita Expressway
- Parking: Paid parking is available around Senshu Park (no dedicated parking within the park)
Nearby Tourist Facilities
When visiting Kubota Castle Ruins, we recommend also visiting the related facilities in the surrounding area:
- Akita City Satake Historical Museum: Exhibits valuable historical materials related to the Satake clan and the Kubota Domain
- Akita Prefectural Museum of Art: Adjacent to Senshu Park, houses collections including those of Tsuguharu Fujita
- Akita City Folk Performing Arts Museum (Neburi Nagashi Hall): Introduces Akita’s traditional culture
- Akarenga Local History Museum: A Western-style building from the Meiji era, exhibiting the history of Akita.
Best Season to Visit
Kubota Castle Ruins (Senshu Park) can be enjoyed throughout the four seasons, but the best times to visit are:
- Spring (Mid-to-Late April): A famous cherry blossom viewing spot with approximately 730 Somei Yoshino cherry trees in full bloom. One of the best cherry blossom viewing spots in Akita City.
- Summer (July-August): Beautiful fresh greenery, perfect for a stroll in the cool shade.
- Autumn (October-November): Stunning autumn foliage, with a magnificent contrast between the Osumi-yagura turret and the autumn leaves.
- Winter (December-February): The snow-covered castle ruins create a fantastic atmosphere. However, be careful of your footing.
Historical Significance of Kubota Castle
Position in the History of Castle Construction After the Battle of Sekigahara
Kubota Castle is one of the castles built during the “Keicho Castle Construction Rush” period after the Battle of Sekigahara. During this period, the Tokugawa Shogunate ordered daimyo who had been transferred to other domains to construct new castles, and castle construction progressed throughout the country.
However, Kubota Castle differs significantly from other castles of the same period (e.g., Himeji Castle, Nagoya Castle) in that it lacks stone walls and a keep. This unique structure is the result of a combination of factors, including the political situation after the establishment of the Tokugawa Shogunate, economic constraints, and regional characteristics, making it an important case study for understanding the history of castle construction in the early Edo period.
Characteristics of Castle History in the Tohoku Region
The Tohoku region has a relatively large number of castles, like Kubota Castle, that primarily utilize earthworks. This is due to factors such as the difficulty of obtaining stone materials in many areas, the traditional castle construction techniques centering on earthworks, and the suitability of earthworks for the cold climate.
Kubota Castle can be positioned as a transitional castle, strongly retaining the castle construction traditions of the Tohoku region while also possessing the functions of a modern castle. Kubota Castle serves as an important case study in the study of castle history in the Tohoku region.
The Survival of the Satake Clan and the Development of Akita
Due to their ambiguous stance at the Battle of Sekigahara, the Satake clan suffered a significant reduction in their territory, but they avoided complete confiscation (dispossession). This is thought to be a result of consideration given to Yoshinobu’s political skills and the Satake clan’s status as a prestigious family.
After being transferred to Akita, the Satake clan maintained their domain’s administration from Kubota Castle for 267 years. This long period of stable rule greatly contributed to the regional development of Akita. The foundation of present-day Akita Prefecture’s culture and industry was greatly influenced by the Satake clan’s rule, and in that sense, Kubota Castle is an extremely important presence in Akita’s history.
Summary
Kubota Castle is a flatland castle built by Satake Yoshinobu in 1604 (Keicho 9), characterized by its unique structure without stone walls or a keep. After the Battle of Sekigahara, the Satake clan, who were transferred from Hitachi Province to Akita in Dewa Province, ruled the Akita Domain for 267 years from this castle, contributing to the region’s development.
Currently, the Kubota Castle ruins have been developed into Senshu Park, where visitors can reflect on its history through the reconstructed corner turret, main gate, and original earthworks. Located in the heart of Akita City, Senshu Park, also known for its cherry blossoms, is a place of relaxation for Akita citizens and is preserved as an important historical site.
Understanding the history of Kubota Castle provides valuable clues to understanding the political situation in Japan after Sekigahara, the history of castles in the Tohoku region, and the local history of Akita. When visiting Akita, be sure to stroll through Senshu Park and trace the footsteps of this magnificent castle built by the Satake clan.
Frequently Asked Questions (FAQ)
Q1: Why did Kubota Castle not have a keep?
A1: There are several reasons why a keep was not built at Kubota Castle. The main reasons include the need for a modest castle design to avoid provoking the Tokugawa shogunate due to the delicate position after the Battle of Sekigahara, financial difficulties due to the reduction in territory, and the priority given to administrative functions. Instead of a keep, the main enclosure housed the Godashi Shoin, which became the center of the domain’s administration.
Q2: Why didn’t Kubota Castle use stone walls?
A2: The reasons why Kubota Castle used very little stone wall are thought to be economic constraints (financial difficulties due to the reduction in territory), difficulty in securing high-quality stone, and the fact that earthen ramparts were a traditional castle-building technique of the Tohoku region and suited to the local climate and environment. The earthen ramparts, combined with moats, formed an effective defensive line.
Q3: How long does it take to visit the Kubota Castle ruins?
A3: A visit to Senshu Park (Kubota Castle Ruins), including a tour of the interior of the corner turret, should take approximately 1-2 hours. If you plan to stroll through the entire park and visit nearby attractions such as the Satake Historical Museum, allow around 3 hours. During peak seasons like cherry blossom season, it may take longer.
Q4: Who was Satake Yoshinobu?
A4: Satake Yoshinobu (1570-1633) was the first lord of the Akita Domain, who built Kubota Castle. Born as the eldest son of Satake Yoshishige, a Sengoku daimyo of Hitachi Province, he served Toyotomi Hideyoshi and unified Hitachi Province. Although his domain was reduced due to his ambiguous stance at the Battle of Sekigahara, he was an excellent statesman who laid the foundation for the domain’s administration in Akita, and dedicated himself to the construction of the castle town and the promotion of industry.
Q5: What is the origin of the name Senshu Park?
A5: The name Senshu Park combines “Aki” (秋), meaning autumn, from Akita, and “Sen” (千), meaning longevity, signifying a wish for “a thousand years of autumn,” or eternal prosperity. It was named in 1896 (Meiji 29) when the Kubota Castle ruins were developed into a park.
Q6: Is Kubota Castle one of Japan’s Top 100 Castles?
A6: Yes, Kubota Castle is the 9th castle on the list of Japan’s Top 100 Castles. Its unique structure, lacking stone walls and a keep, its historical importance to the Satake clan, and the remaining earthworks and other structures are highly regarded. The Top 100 Castles stamp can be obtained inside the corner turret.
Q7: How do I get from Akita Station to the Kubota Castle ruins?
A7: It’s about a 10-minute walk (approximately 700m) from the west exit of JR Akita Station to the entrance of Senshu Park. Exit the station, go straight from the west exit, cross the main road, and you’ll arrive at the entrance to Senshu Park. The directions are easy to follow, and there are plenty of signs. If you’re taking the bus, get off at the “Senshu Park Entrance” bus stop.
Q8: When is the best time to see the cherry blossoms at Kubota Castle?
A8: The best time to see the cherry blossoms at Kubota Castle Ruins (Senshu Park) is usually from mid-April to late April. Approximately 730 Somei Yoshino cherry trees bloom there, making it one of the best cherry blossom viewing spots in Akita City. The blooming period can vary depending on the weather, so we recommend checking the blooming information before your visit.
