Motegi Castle (Tochigi Prefecture) Complete Guide: Tracing the Lineage of Hatta Tomoie and 400 Years of History
Introduction
Motegi Castle is a medieval mountain castle built on Kikyo Mountain, which rises in the center of Motegi Town, Haga District, Tochigi Prefecture. Also known as “Kikyo Castle,” it functioned as the residence of the Motegi clan for approximately 400 years, from the Kamakura period to the early Edo period. Currently, it is maintained as Shiroyama Park, and the remains such as dry moats and earthworks are well preserved, making it a valuable historical site that conveys the appearance of a Sengoku period mountain castle.
This article will introduce the charm of Motegi Castle in its entirety, from its detailed history from construction to its abandonment, to its structure and highlights, and access methods.
History of Motegi Castle
Construction History and the Establishment of the Motegi Clan
The history of Motegi Castle is deeply intertwined with the establishment of the Kamakura Shogunate. In 1180 (Jisho 4), Hatta Tomoie, the second son of Utsunomiya Munetsuna, participated in Minamoto no Yoritomo’s uprising and, for his service, was appointed as the jitō (land steward) of Mogi-ho in Shimotsuke Province. Hatta Tomoie was a powerful samurai known as one of the “Thirteen Lords of Kamakura” and the ancestor of the Oda clan of Hitachi Province.
In 1192 (Kenkyū 3), Tomoie handed over the jitō position of Mogi-ho to his third son, Tomoki, who adopted the name Mogi. Mogi Tomoki built a castle on Kikyōyama during the Kenkyū era (1190-1199), which is considered the beginning of Mogi Castle. The Mogi clan, as a branch of the Utsunomiya clan, developed into a powerful local family in eastern Shimotsuke Province.
The Mogi Clan’s Activities in the Medieval Period
The Mogi clan governed Mogi-ho from the Kamakura period to the Muromachi period, maintaining relations with the Utsunomiya clan. Mogi Castle was not merely a military base; it functioned as a center of regional control, and a castle town also developed around it.
With the arrival of the Sengoku period (Warring States period), the Mogi clan had to survive by navigating their relationships with surrounding daimyo (feudal lords). Shimotsuke Province was a region where multiple forces exerted influence, including the Utsunomiya clan, the Satake clan of Hitachi Province, and the Hojo clan of Sagami Province. The Mogi clan needed to demonstrate diplomatic skills amidst these power struggles.
Relationship with and Subjugation to the Satake Clan
In 1556, Mogi Castle was attacked by the Satake clan, a powerful daimyo of Hitachi Province. The Satake clan was a powerful force unifying Hitachi Province and was attempting to expand into Shimotsuke Province as part of their southward expansion policy. The Mogi clan was defeated in this battle and subsequently became vassals of the Satake clan, coming under their influence.
While this subjugation was humiliating for the Mogi clan, it also provided them with a powerful backer in the form of the Satake clan. In fact, the Satake clan’s reinforcements played a crucial role in the survival of the Mogi clan in subsequent battles.
The Crisis and Recapture of the Tensho Era
In 1585 (Tensho 13), Mogi Castle faced a major crisis. A combined force of the Hojo clan of Sagami Province and the Yuki clan of Shimotsuke Province attacked Mogi Castle, and it was temporarily seized. The Hojo clan was aiming to expand its power throughout the Kanto region, and Mogi Castle, under the influence of the Satake clan, was a strategically important base.
However, the Mogi clan, with reinforcements from the Satake clan, counterattacked and succeeded in recapturing the castle. This battle took on the appearance of a proxy war between the two major powers, the Satake and Hojo clans, and demonstrated the strategic importance of Mogi Castle.
The Mogi Clan’s Relocation to Ogawa Castle
Subsequently, by order of Satake Yoshishige, Mogi Haruyoshi, the head of the Mogi clan, moved to Ogawa Castle (present-day Omitama City, Ibaraki Prefecture). This marked the end of the Mogi clan’s rule over Mogi Castle, which had continued for approximately 400 years since the Kenkyu era. It is believed that this relocation was due to a reorganization of the Satake clan’s domain management.
Early Edo Period and Castle Abandonment
In 1602 (Keicho 7), following the distribution of rewards after the Battle of Sekigahara, Tokugawa Ieyasu transferred Satake Yoshinobu to Akita. The Mogi clan followed suit, relocating to Akita.
The land of Mogi was then granted to Hosokawa Okimoto, the younger brother of Hosokawa Tadaoki. Okimoto received a 10,000 koku domain, but abandoned Mogi Castle on the mountaintop and established the Mogi Jinya (fortified residence) at the foot of the mountain. As a result, Mogi Castle was abandoned, ending its role as a mountain castle.
Subsequently, the land of Mogi passed through the hands of the Hisamatsu Matsudaira family and others, before finally being ruled again by the Hosokawa family, who governed it until the Meiji Restoration.
Structure of Mogi Castle
Location and Layout
Mogiki Castle is built on Kikyoyama Mountain, approximately 150 meters above sea level, north of the center of Mogi Town. Despite being a mountain castle, it boasts a vast flat area at the summit, and features a complex layout with multiple baileys (kuruwa).
The Sakagawa River serves as a natural moat on the east and south sides of the castle, while the steep terrain provides defense on the west and north sides. This location overlooks the castle town, combining military and lordly functions.
Major Remains
Honmaru (Main Enclosure)
The Honmaru, located at the highest point of the castle, still retains a large flat area. Earthen ramparts surround the Honmaru, reaching heights of 2-3 meters in some places. From the Honmaru, one can enjoy a panoramic view of Mogi town, allowing one to imagine the former lord surveying his territory from this vantage point.
Major Remains
Honmaru (Main Enclosure)
The Honmaru, located at the highest point of the castle, still retains a large flat area. Earthen ramparts surround the Honmaru, reaching heights of 2-3 meters in some places. From the Honmaru, one can enjoy a panoramic view of Mogi town, allowing one to imagine the former lord overlooking his territory from this vantage point. #### Second and Third Baileys
The second and third baileys are positioned around the main bailey, forming a tiered defensive structure. Each bailey is clearly separated by steep cliffs, showing traces of modifications made during the Sengoku period.
Dry Moats and Moats
One of the greatest highlights of Mogi Castle is its well-preserved dry moats and moats. The moats separating the baileys, in particular, reach depths of over 5 meters in some places, indicating they were strong defensive structures designed to prevent enemy intrusion.
The dry moats are arranged to encircle the baileys, and in some areas, vertical moats descending the slopes can also be observed. These remains are valuable historical documents illustrating the castle-building techniques of the Sengoku period.
Earthworks
Earthworks remain throughout the castle grounds, with those around the main bailey being particularly well-preserved. It is believed that fences or walls were built on top of these earthworks, further enhancing their defensive capabilities.
Entrance (Koguchi)
The entrance to the castle, the koguchi, has a complex structure designed to prevent enemy intrusion. Traces of staggered koguchi and masugata koguchi can be seen, indicating that the defensive functions were strengthened through renovations during the Sengoku period.
Structure of the Castle Town
A castle town was formed at the foot of Mogi Castle, with samurai residences and merchant districts. The current layout of Mogi town retains some remnants of that time. A riverbank was established along the Sakagawa River, functioning as a center for the collection and distribution of goods.
Highlights of Mogi Castle
Development as Shiroyama Park
Currently, the Mogi Castle ruins have been developed as “Shiroyama Park,” a symbolic landmark of Mogi town. Walking paths are maintained within the park, allowing visitors to enjoy strolling while exploring the historical sites.
From the park, you can enjoy a panoramic view of Mogi town, and on clear days, you can even see the Nikko mountain range in the distance. You can also enjoy watching the steam locomotive of the Mooka Railway running along the Sakagawa River, creating a landscape where history and modernity intersect.
Famous Flower Spots for All Seasons
Shiroyama Park is also known as a famous flower spot.
Spring Cherry Blossoms: From late March to April, various types of cherry blossoms bloom one after another for about a month. A unique feature is that you can enjoy different varieties, including Somei Yoshino, mountain cherry blossoms, and double-flowered cherry blossoms, at different times. The park is bustling with many visitors during cherry blossom season, and the blossoms are also illuminated at night.
Autumn Spider Lilies: From mid- to late September, approximately 300,000 spider lilies dye the south-facing slope a brilliant red. This spectacle is breathtaking, attracting many tourists from within and outside the prefecture. It boasts one of the largest clusters of spider lilies in Tochigi Prefecture.
Winter Winter Sweet: In the depths of winter, winter sweet blossoms bloom with yellow flowers, filling the air with a sweet fragrance. The winter jasmine blooming amidst the snowy landscape is a hidden gem of Shiroyama Park in winter.
Arakashi Shrine
Near Shiroyama Park is Arakashi Shrine. This ancient shrine, said to have been founded in 806 AD, has been revered by successive lords of Motegi Castle as a protector against evil spirits. Even today, it remains a beloved guardian shrine of Motegi, cherished by local residents.
The shrine grounds boast centuries-old giant trees, creating a solemn atmosphere. It’s a must-visit spot when visiting Motegi Castle.
Castle Stamp
The Motegi Castle stamp can be purchased at the Motegi Town Cultural Exchange Center, “Fuminomori Motegi.” Priced at 300 yen per stamp, it’s a popular item commemorating the history of Motegi Castle. Be sure to get one as a memento of your castle tour!
Access and Visit Information
Location
Motegi, Motegi-machi, Haga-gun, Tochigi Prefecture
Access by Car
- Approximately 30 minutes from the Kita-Kanto Expressway “Moka IC” via National Route 294
- Approximately 50 minutes from the Joban Expressway “Mito IC” via National Route 123
Parking
Free parking is available at Shiroyama Park. Due to expected congestion during cherry blossom and spider lily seasons, early visits are recommended.
Access by Public Transportation
- Approximately 15 minutes on foot from Mogi Station on the Mooka Railway
- Access to Shiroyama Park from Mogi Station is via the town center.
Visiting Information
- Visiting Hours: Always open (free to stroll around as it is maintained as a park)
- Admission Fee: Free
- Estimated Time Required: Approximately 1-2 hours for a thorough visit
Clothing and Precautions
- As it is a mountain castle, comfortable walking shoes are recommended.
- Insect repellent is useful in the summer.
- Be careful as the ground can be slippery in rainy weather.
- To protect the remains, avoid walking on the earthworks and moats.
Nearby Tourist Attractions
Mogi Town Cultural Exchange Center “Fuminomori Motegi”
Located south of Mogi Castle, this cultural facility houses a library and exhibition space. It also displays materials related to the history and culture of Mogi Town, making it ideal for deepening your understanding of Mogi Castle. Castle stamps can also be purchased here. ### Mooka Railway
The Mooka Railway, featuring steam locomotives (SLs), is one of Motegi Town’s main tourist attractions. SLs operate mainly on weekends, offering a retro atmosphere. Motegi Station also has a turntable, making it a popular spot for railway enthusiasts.
Twin Ring Motegi (Mobility Resort Motegi)
A representative tourist facility in Motegi Town, this comprehensive leisure complex features a circuit, attractions, and nature experience facilities. It’s approximately a 15-minute drive from Motegi Castle.
Michi-no-Eki Motegi (Roadside Station Motegi)
Located along National Route 123, this roadside station offers fresh local produce and specialty products. Products using Motegi Town’s yuzu citrus are particularly popular.
The Later History of the Motegi Clan
After migrating to Akita with the Satake clan, the Motegi clan continued to serve as important retainers of the Satake family. They held key positions in the Akita domain and served the Satake family until the Meiji Restoration.
Descendants of the Mogi clan still live in Akita Prefecture today, and exchanges with Mogi Town in Tochigi Prefecture, where Mogi Castle once stood, continue. Furthermore, Mogi Town retains numerous historical sites and legends related to the Mogi clan, making them an important element of the region’s historical identity.
Historical Significance of Mogi Castle
Motegi Castle, as a castle of a local powerful family from the medieval to early modern period, holds the following historical significance:
- Genealogy of Kamakura Shogunate Retainers: Built by descendants of Hatta Tomoie, a powerful retainer of the Kamakura Shogunate, it is an important example illustrating the development of samurai groups during the Kamakura period.
- Survival Strategies of Local Powerful Families in the Sengoku Period: It conveys the story of local powerful families who sought to survive amidst power struggles between daimyo, such as submitting to the Satake clan and fighting against the Hojo clan.
- Structure of Mountain Castles: The well-preserved remains are valuable historical resources that convey to the present day the construction techniques and defensive philosophies of mountain castles during the Sengoku period.
- Symbol of Local History: In Mogi, a region ruled by the Mogi clan for approximately 400 years, the castle was a central element of local identity.
Summary
Moki Castle is a prime example of a medieval mountain castle remaining in Mogi Town, Haga District, Tochigi Prefecture. Built by Mogi Tomoki during the Kenkyu era of the Kamakura period, it functioned as the residence of the Mogi clan for approximately 400 years. During the Sengoku period, the Mogi clan defended the castle despite being caught between powerful forces such as the Satake and Hojo clans.
Currently, it is maintained as Shiroyama Park, with well-preserved remains such as dry moats, earthworks, and trenches. Visitors can enjoy seasonal flowers such as cherry blossoms in spring and spider lilies in autumn, making it a spot where you can enjoy both historical walks and nature appreciation.
While gazing at the scenery of the Mooka Railway’s steam locomotives, one can reflect on the history that has continued since the Middle Ages—Moki Castle is a place where you can spend such a luxurious time. When you visit Tochigi Prefecture, be sure to stop by the ruins of Mogi Castle.
Obtain a castle stamp at the Mogi Town Cultural Exchange Center, pay your respects at Arakashi Shrine, and take a leisurely stroll through Shiroyama Park. Such a day will surely become a memorable one. Mogi Castle, with its 400-year history, continues to quietly welcome visitors.
