Tamon Castle (Tamon-yama Castle) Complete Guide | A Pioneer of Early Modern Castles Built in Nara City
What is Tamon Castle?
Tamon Castle (Tamon-jo) was a flatland castle that once existed in Horen-cho, Nara City, Nara Prefecture. Also known as Tamon-yama Castle (Tamon-yama-jo), it was built by Matsunaga Hisahide, a prominent warlord of the Sengoku period. This castle holds an extremely important position in the history of Japanese castles and is known as the birthplace of the four-story turret, which later became the main keep, and the “Tamon-yagura” (Tamon turret) found in castles throughout Japan.
Currently, the castle site is the grounds of Nara City Wakakusa Junior High School, and although no buildings remain from the past, a stone monument has been erected to commemorate the existence of this innovative castle.
History and Background of Tamon Castle
Background of Construction
In 1559 (Eiroku 2), Matsunaga Hisahide began construction of a castle on a hill called Mikenji-yama. Hisahide had risen through the ranks as a retainer of Miyoshi Nagayoshi and was entrusted with the rule of Yamato Province (present-day Nara Prefecture). Nara was a unique region with powerful temples and shrines such as Todai-ji and Kofuku-ji, and a strong and imposing castle was needed to control these and establish a base for governing Yamato.
From Construction to Completion
Construction of Tamon Castle proceeded in earnest from 1559 (Eiroku 2) to 1560 (Eiroku 3), and is believed to have been completed in 1564 (Eiroku 7). The reason for choosing Mikenji-yama as the location was its strategic position overlooking the Nara Basin and its location overlooking Todai-ji and Kofuku-ji. Hisahide incorporated groundbreaking architectural styles into this castle. He constructed a four-story turret (the prototype of the later keep) and arranged long, barrack-like turrets (Tamon turrets) along the castle walls. These were innovative structures that set it apart from traditional mountain castles and symbolized the transitional period towards early modern castles.
The Era of Matsunaga Hisahide
The completed Tamon Castle became known for its splendor and strength. Within the castle grounds stood buildings with tiled roofs, and it also possessed cultural aspects, including gardens and tea rooms. Matsunaga Hisahide was deeply knowledgeable about the tea ceremony and culture, and Tamon Castle functioned not merely as a military facility but also as a cultural center.
It is said that Oda Nobunaga was also impressed by its magnificence when he visited the castle. Many researchers believe that the influence of Tamon Castle can be seen in Azuchi Castle, which Nobunaga later built, illustrating the importance of Tamon Castle in the history of Japanese castles.
The Castle’s Demise
In 1567 (Eiroku 10), the conflict between Matsunaga Hisahide and the Miyoshi Three intensified, leading to the Battle of Todai-ji Temple’s Great Buddha Hall. This battle resulted in the Great Buddha Hall of Todai-ji Temple being destroyed by fire, severely damaging Hisahide’s reputation.
Afterward, Hisahide became a vassal of Oda Nobunaga, but in 1577 (Tensho 5), he rebelled against Nobunaga at Shigisan Castle, was defeated, and committed suicide. After Hisahide’s death, Tamon Castle passed through the hands of his son, Matsunaga Hisamichi, and around 1573 (Tensho 1), the castle became the lord of Hanawa Naomasa, a general on the Oda side.
However, in 1580 (Tensho 8), Tamon Castle was destroyed by order of Oda Nobunaga. It is said that the castle’s materials were repurposed for the construction of Tsutsui Castle, the residence of Tsutsui Junkei, and Koriyama Castle. In a short period of just over 20 years, this innovative castle disappeared from the stage of history.
The Castle Structure of Tamon Castle
Scale and Layout
Tamon Castle was a flatland castle built on Mount Mimaji. While there are various theories regarding its size, some suggest it was approximately 100 meters east-west and 100 meters north-south, while others propose a larger size of approximately 360 meters east-west and 200 meters north-south. As archaeological excavations and historical research progress, it is suggested that the actual size may have been larger.
The castle is believed to have had a structure with multiple baileys (kuruwa) arranged around the main keep (honmaru). It skillfully utilized the hilly terrain to enhance its defensive capabilities.
Four-Story Turret (Prototype of the Keep)
The most distinctive feature of Tamon Castle is the presence of a four-story turret. This structure, equivalent to a later keep (tenshu), was extremely innovative for its time. Up until then, such tall structures were not common in castles, and the four-story turret of Tamon Castle is considered a precursor to the keep in early modern castles.
This four-story turret boasted an imposing presence as a symbol of the castle and is thought to have also functioned as an observation deck overlooking the surrounding area. There is a theory that the keep of Azuchi Castle, later built by Oda Nobunaga, was influenced by Tamon Castle, making it an important milestone in the history of Japanese castles.
Origin of the Tamon Turret
Another innovative element of Tamon Castle was the long, continuous turret, or Tamon turret. These turrets were built in a long, continuous line along the castle walls, enhancing defensive capabilities and also functioning as living quarters for soldiers and an armory.
This type of turret is said to have originated at Tamon Castle and was later adopted by castles throughout Japan. Even today, the name “Tamon turret” found in castles across the country all originates from this Tamon Castle. The presence of Tamon-yagura (multi-story watchtowers) in famous castles such as Edo Castle, Nagoya Castle, and Osaka Castle demonstrates the widespread adoption of the Tamon-yagura architectural style throughout Japan.
Tiled Roofs and Gardens
At Tamon-jo Castle, roof tiles were used for the buildings. At the time, wooden or thatched roofs were common in castle architecture, making the use of tiles a pioneering approach. Tiled roofs offered superior fire resistance and also symbolized high status.
Furthermore, the castle grounds included gardens and tea rooms, creating a space where samurai culture and tea ceremony culture merged. Matsunaga Hisahide was also known as a tea master and is famous for owning the renowned tea utensil “Kotenmei Hiragumo.” Tamon-jo Castle was not merely a military facility, but a castle possessing cultural sophistication.
Historical Significance of Tamon Castle
A Pioneer of Early Modern Castles
Tamon Castle is an important example of the transition period from medieval mountain castles to early modern flatland castles and hill castles. Elements such as the four-story turret (the prototype of the keep), the multi-story turret, and the tiled roof became standard components of later early modern castles.
Many famous castles built in later periods, such as Azuchi Castle, Osaka Castle, and Himeji Castle, inherited the architectural style attempted at Tamon Castle. In that sense, Tamon Castle can be said to have been a “testing ground” and a center of innovation in the history of Japanese castles.
The Ambition and Culture of Matsunaga Hisahide
Tamon Castle also reflects the character of Matsunaga Hisahide. Hisahide is known as a “warlord of the Sengoku period,” and led a dramatic life, betraying his lord, burning down the Great Buddha Hall, and ultimately rebelling against Nobunaga and committing suicide.
On the other hand, Hisahide possessed excellent administrative skills and was a cultured man well-versed in tea ceremony and culture. The splendor and innovative nature of Tamon Castle embody both Hisahide’s ambition and cultural refinement.
Relationship with Oda Nobunaga
The anecdote of Oda Nobunaga visiting Tamon Castle and being impressed by its structure is well-known. It is said that Nobunaga later used Tamon Castle as a reference when building Azuchi Castle. Many of the features of Azuchi Castle, such as the adoption of a keep, the use of stone walls, and tiled roofs, can be traced back to Tamon Castle.
The fact that Tamon Castle’s materials were reused in Tsutsui Castle and Koriyama Castle after its destruction is also an interesting fact from the perspective of the dissemination of castle construction technology.
Location and Access
Location
Address: Horen-cho, Nara City, Nara Prefecture
The site of Tamon Castle is currently the grounds of Nara Municipal Wakakusa Junior High School. Since the site is on school grounds, consideration is needed when visiting. However, a stone monument inscribed with “Tamon Castle Ruins” stands near the entrance, indicating the former existence of an important castle.
Access
By Train/Bus:
- Get off at Kintetsu Nara Station on the Kintetsu Nara Line.
- Take a Nara Kotsu bus and get off at the Konoike bus stop.
- Approximately 10 minutes on foot from the bus stop.
By Car:
- Approximately 10 minutes from the Horai Interchange on the Daini-Hanna Expressway.
- Use nearby public parking lots.
Precautions During Visits
Since the castle ruins are on school grounds, please avoid entering during class hours and be considerate of school staff and students. The stone monument is located near the school entrance and can be seen from outside.
Current Status of Tamon Castle Ruins
Status of Remains
Unfortunately, very few remains of Tamon Castle, such as buildings or stone walls, remain today. The castle’s structures were dismantled in 1580 and repurposed for the construction of other castles.
While the current Wakakusa Junior High School grounds are said to retain slight traces of the former castle’s baileys through the topographical undulations, it is difficult to confirm any clear remains.
Monument and Commemoration
A monument marking the “Tamon Castle Ruins” stands at the school entrance, indicating the historical importance of this site. Furthermore, Nara Prefecture and Nara City are undertaking efforts to preserve and utilize this historical resource.
In recent years, archaeological excavations and documentary research have gradually revealed the true nature of Tamon Castle, and further research is expected.
Historical Spots Around Tamon Castle
Todai-ji Temple
Located southeast of Tamon Castle, Todai-ji Temple is one of Japan’s most representative temples, founded during the Nara period. It was also the site of a historical event: the burning of the Great Buddha Hall during the battle between Matsunaga Hisahide and the Great Buddha Hall of Todai-ji Temple. The current Great Buddha Hall was rebuilt during the Edo period, but it is registered as a World Heritage Site as one of the world’s largest wooden structures.
Kofuku-ji Temple
Kofuku-ji Temple, located in the heart of Nara City, was also a powerful force in Yamato Province during the time of Tamon Castle. It boasts numerous attractions, including a five-story pagoda and a National Treasure Hall. Matsunaga Hisahide is believed to have built Tamon Castle to control the power of temples and shrines, including Kofuku-ji Temple.
Nara Kitamachi
The area around Horen-cho, where the ruins of Tamon Castle are located, is called “Nara Kitamachi,” and retains old townscapes and historical buildings. You can feel the atmosphere of the Sengoku period while strolling through the area.
Shigisan Castle Ruins
The ruins of Shigisan Castle, where Matsunaga Hisahide met his end, are also located in Nara Prefecture (Heguri-cho, Ikoma-gun). Visiting both Tamon Castle and Shigisan Castle together will allow you to gain a deeper understanding of Hisahide’s life.
Reference Information for Understanding Tamon Castle
Related Literature and Materials
While historical materials concerning Tamon Castle are limited, the following documents provide detailed information:
- *Shinchō Kōki*: A biography of Oda Nobunaga, containing descriptions of Tamon Castle.
- *Tamon-in Nikki*: A diary written by a monk of Kōfuku-ji Temple, recording the situation in Nara at the time.
- Various Castle Research Books: Summarizing recent excavation surveys and research findings.
Nara Prefecture’s Initiatives
Nara Prefecture publishes information on castles within the prefecture, including Tamon Castle, through the “Nara Prefecture Historical and Cultural Resources Database ‘Ikasu Nara’,” etc. These databases provide detailed explanations of the history and structure of Tamon Castle, offering useful information for research and tourism.
The Influence of Tamon Castle on Japanese Castles
Genealogy of Castle Tower Architecture
The four-story tower of Tamon Castle is considered the origin of castle tower architecture in Japan. Up until then, while castles had watchtowers and turrets, multi-story high-rise buildings were not common.
After Tamon Castle, castles with keeps (tenshu) were built one after another, including Azuchi Castle (construction started in 1576), Osaka Castle (construction started in 1583), and Himeji Castle (renovation started in 1601). The keep became an indispensable element of early modern castles, serving as a symbol of the castle and a representation of the lord’s authority.
Nationwide Spread of Tamon Turrets
The Tamon turret, a long, barrack-like turret, originated at Tamon Castle and spread throughout Japan. Tamon turrets were adopted in castles throughout the country, such as the Fujimi Tamon in the main keep of Edo Castle, the Tamon turret connecting the northwest corner turret and the Omote-Ninomon gate of Nagoya Castle, and the long wall of Kumamoto Castle.
This type of turret was highly functional, offering improved defensive capabilities, space for soldiers to be stationed, and use as an armory. The fact that the architectural style attempted at Tamon Castle became the standard for castle architecture throughout Japan is a significant historical fact demonstrating the castle’s importance.
The Spread of Tile Roofing
The adoption of tile roofing at Tamon Castle also had a major impact on later castle architecture. Tiles, being fire-resistant and symbolizing status, became standard in early modern castles.
The Figure of Matsunaga Hisahide
Evaluation as a Ruthless Warlord
Matsunaga Hisahide is known as a “ruthless warlord of the Sengoku period,” and is accused of committing the “three evils” of murdering his lord, killing the shogun, and burning down the Great Buddha Hall. The burning of the Great Buddha Hall of Todai-ji Temple, in particular, was criticized for the destruction of cultural property and continued to be criticized for generations.
His final moments were dramatic: he rebelled against Oda Nobunaga at Shigisan Castle and died in an explosion along with the famous tea utensil “Kotenmei Hiragumo.” His refusal to hand over the utensil to Nobunaga, and his unwavering adherence to his own aesthetics, symbolize the complex character of Hisahide.
Aspects of Culture
On the other hand, Hisahide possessed excellent administrative skills and was a cultured man well-versed in culture such as the tea ceremony and linked verse. The establishment of gardens and tea rooms at Tamon Castle demonstrates Hisahide’s cultural refinement.
He was also known as a collector of famous tea utensils, owning not only “Hiragumo” but also “Tsukumogami Nasu,” among others. Hisahide was a Sengoku warlord who understood not only military power but also the power of culture.
Evaluation as an Innovator
Recent research is re-evaluating Matsunaga Hisahide not simply as a “villain,” but as a pioneer of his time. Hisahide’s achievements are multifaceted, encompassing innovation in the construction of Tamon Castle, efficient domain management, and the protection and promotion of culture.
Hisahide’s construction of the innovative Tamon Castle, which significantly influenced later castle architecture, should be highly regarded as a historical contribution.
Current Status and Challenges of Tamon Castle Research
Limitations of Historical Sources
Contemporary historical sources concerning Tamon Castle are limited, leaving many questions unanswered regarding its detailed structure and scale. Due to the scarcity of illustrations and detailed records, researchers are forced to infer the castle’s true nature from fragmentary sources.
Results of Archaeological Excavations
In recent years, partial archaeological excavations have been conducted on and around the grounds of Wakakusa Junior High School, yielding artifacts such as roof tiles and ceramics. These excavation results are gradually revealing the true nature of Tamon Castle.
Further investigations may reveal more details about the castle’s scale, structure, and lifestyle.
Challenges of Preservation and Utilization
Because the Tamon Castle ruins are located on school grounds, there are limitations on large-scale archaeological excavations and public access to the remains. The challenge lies in how to preserve and utilize its value as a historical resource while maintaining its function as an educational facility.
Nara Prefecture and Nara City are working on creating reconstructed CG images using digital technology and strengthening information dissemination. Efforts continue to convey the historical value of Tamon Castle, even with the scarcity of physical remains.
Summary
Tamon Castle (Tamon-yama Castle) was an innovative castle built by Matsunaga Hisahide in Nara City, Nara Prefecture. It contained many elements that greatly influenced later early modern castles, such as the prototype of the four-story turret (tenshu), the origin of the Tamon turret, and the adoption of tiled roofing.
Although it was destroyed in just over 20 years, and therefore very few remains exist today, its importance in the history of Japanese castles is extremely high, and it is positioned as a precursor to later famous castles such as Azuchi Castle.
Tamon Castle, built by the complex figure of Matsunaga Hisahide, is a symbolic representation of the intersection of ambition and innovation, culture and military power during the Sengoku period. When you visit Nara, why not stop by the stone monument at the entrance of Wakakusa Junior High School and reflect on the fact that an innovative castle that changed the history of Japanese castles once stood here?
