Today, the ruins of Samegao Castle have been developed as part of a historical park called the Hida Historical Village, which also includes ancient house ruins and groups of burial mounds. If you drive to the ruins, you can use the parking lot beside Hida Shrine which also has a long history. You can also stop by the information center of the park from the parking lot, where you can get a guide for the ruins.
The map around the castle
The park entrancea restored ancient houseThe information center
There are three routes to the castle ruins, which are the Eastern, the Northern and the Southern Routes. The former two routes start from the information center. In addition, the northern one has few historical items, so if it is the first time for you to visit the ruins, the eastern one would be better. The northern one can be used when you return.
The three routes, from the signboard at the site, upwards is west on the map, adding the red lettersThe Northern RouteThe well ruins along the Northern Route, called “Kagetora Spring”
Going on Eastern Route
If you choose the Eastern Route as the original back route of the castle, you will walk on the route which goes on or beside the ridge of the mountain. You will eventually see the sign for “O-horikiri” or “Large Ditch 6” in Japanese. This is around the entrance of the ruins. You will come to Large Ditch 5, followed by several other ditches. The route is cut narrow over these ditches.
The relief map around the castle
The Eastern RouteThe sign for “Large Ditch 6” on the rightLarge Ditch 6The sign for “Large Ditch 5”Large Ditch 5The earthen bridge on the route is cut narrow over these ditches
Then, you will be in the Eastern First Enclosure which seems to have been a lookout.
Getting close to the Eastern First Enclosure over another ditchThe Eastern First EnclosureA view from the Eastern First Enclosure
After passing Ditch 6, you need to climb a very steep slope with a rope to the next enclosure. This must have been an important point for defense in the past.
The very steep slope after Ditch 6You need to climb this slope with a ropeLooking down the steep slope from above
You will soon reach Large Ditch 1, which is also the meeting point of the Eastern and the Southern Routes.
Large Ditch 1The meeting point of the Eastern and the Southern Routes
Second and Third Enclosures on Southern Route
In fact, the Southern Route was the original main route of the castle. The route zigzags through a valley and on another ridge to make enemies attack slowly. The Third and Second Enclosures are the last parts of the route after the ruins of the gateway for defense, called Koguchi. The excavation team found traces of a fire from both enclosures, probably because of the Otate Rebellion. In particular, a burned rice ball was found in the Third Enclosure, which may have been the portable ration for a soldier.
The Southern RouteThe gateway ruinsThe Third EnclosureThe Second Enclosure
The final place of the Otate Rebellion and Kagetora Uesugi
Location and History
Branch of Kasugayama Castle
Samegao Castle was located on a mountain in the western part of Echigo Province which is now Nigata Prefecture. It is uncertain when the castle was first built, but in the late 16th Century, it was one of the satellite castles of Kasugayama Castle, the home base of Kenshin Uesugi. Kenshin was one of the greatest warlords at that time in Japan, who built the network of castles to protect his home base. Samegao Castle is, in fact, rather well-known as the final battlefield of the Otate Rebellion and the place of Kagetora Uesugi’s death, who was defeated in the rebellion.
The location of the castle
The portrait of Kenshin Uesugi, owned by the Uesugi Shrine (licensed under Public Domain via Wikimedia Commons)The network of the branch castles around Kasugayama Castle exhibited by Joetsu City Buried Cultural Property Center, Samegao Castle is marked by the red circle
Kagetora is adopted from Hojo to Uesugi
Kagetora Uesugi was an adopted child of Kenshin, but had been born as a family member of the Hojo Clan, which fought with Kenshin over the Kanto Region. The reason why Kagetora came to Uesugi was that Uesugi and the Hojo made peace temporarily in 1569 against the Takeda Clan. The Takeda clan broke the alliance of the three clans (Takeda, Imagawa and Hojo) by invading Imagawa territory. The Hojo clan was very angry about it. However, the new alliance between Uesugi and the Hojo lasted for only two years because the Hojo quit and reforged the alliance with the Takeda in 1571. Ordinarily, Kagetora could have been returned to the Hojo, but Kenshin let Kagetora stay as a part of the Uesugi clan for some reason. It is said that Kenshin personally liked Kagetora. Even though no portraits of Kagetora remain, records say he was attractive and looked beautiful.
The imaginary portrait of Kagetora Uesugi, from the signboard at the site
Two adopted sons are against each other after Kenshin’s death
With the cessation of the alliance with the Hojo, Kenshin adopted another son from his relatives, called Kagekatsu Uesugi. Kenshin seemed to hope that Kagetora would support Kagekatsu and they would cooperate with each other. Many historians also say Kenshin had not clearly decided his successor before his sudden death in March 1578. In fact, these two adopted sons lived in the same Kasugayama Castle as if Kagekatsu was the master for a while after their father’s death. However, the situation didn’t allow them to make peace. The trusted vassals of Kagekatsu, who were the core members of the government, supported him. Other local lords in Echigo Province and some warlords outside the province supported Kagetora because he had come from the outside. Kagetora’s parents’ home, the Hojo and its ally, the Takeda especially wanted him to be the successor. That made the two successor candidates battle each other starting in May 1578, which was called the Otate Rebellion.
The portrait of Kagekatsu Uesugi, owned by Uesugi Shrine (licensed under Public Domain via Wikimedia Commons)
Otate or the Palace, was originally the residence for Norimasa Uesugi, who was a former shogunate deputy for the Kanto Region and Kenshin’s foster father. Kagetora escaped from Kasugayama Castle to the residence, about 5km from the castle. It became his home base during the battle for nearly one year. At the beginning of the battle, Kagetora was superior in terms of support to Kagekatsu until the lord of the Takeda, Katsuyori Takeda came to Echigo Province with his troops to support Kagetora in June. However, Kagekatsu let Katsuyori return to his home by giving a lot of money and promising to cede some territories. After that, the situation reversed as Kagekatsu had many native loyal retainers while Kagetora had few because of his career. Kagekatsu finally made a full-scale attack on the Otate Residence before it fell in March 1579. Kagetora escaped and tried to get to Odawara, his parental familial home base, Odawara Castle. He stopped by a castle of his supporter, Munechika Horie, which would be the place of his death. This place was called Samegao Castle.
The Portrait of Katsuyori Takeda, owned by Koyasan Jimyoin (licensed under Public Domain via Wikimedia Commons)The imaginary scene of the Otate Residence’s fall, exhibited by the Hida Historical Village Information Center
Kagetora dies in Samegao Castle
Samegao Castle was a satellite castle, but had a large scale because it was on the way to Shinao Province (now Nagano Pref.), south of Echigo, where Kenshin and Shingen Takeda, who was Katsuyori’s father, often battled each other. It was a typical mountain castle at that time, using natural terrain to make it defensive. Many enclosures made of soil were built on the ridges. They were divided by artificial ditches and connected by narrow paths cut vertically on both sides. The routes through the valleys were zigzagged so that enemies could not attack the castle easily.
The statues of Shingen Takeda (on the left) and Kenshin Uesugi (on the right) at the Kawanakajima Battlefield in Nagano PrefectureThe illustration of Samegao Castle Ruins, from the signboard at the site
Even staying in the strong castle, Kagetora was not able to survive without reinforcement from the outside. He was attacked by Kagekatsu’s pursuing troops right away. Some records say Munechika Horie, the lord of the castle also betrayed Kagetora. Kagetora finally committed Harakiri (ritual suicide) at the age of 26 after the castle buildings were burned by the troops.
More needs to be done to improve this historical site
Features
Strong defense in Back side
If you have time, you should check out the back side of the castle. This is because the ridge on the back is very narrow, so original trail and the ruins along it seem to remain as it was. The Main Enclosure and the enclosure behind it are divided by an artificial ditch to prevent enemies from attacking form the back. The ditch is partly supported by stone walls to avoid collapsing, which is rare in Japanese castles.
The ditch using stone walls divides the Main Enclosure and the back
The map around the castle
Moreover, two earthen lookout platforms are in line on the ridge at the back of these enclosures. They are also partly supported by stone walls or stone mound, which are also uncertain who built or improved it.
One of the lookout platformsThe stone walls supporting the platformThe trail gets thin between the platforms
The trail goes beside the platforms and between them, which was made thin cut by vertical moats both sides. That meant the defenders on the platforms would see and counterattack enemies easily.
The trail between the platformsLooking up the platform from the thin trailOverlooking the trail from the platform
Later History
In the Edo Period, a stone statue of the Takeda Fudoson or Acala, which worshiped Shingen Takeda, was built in an enclosure between the Gate Ruins No.2 and No.3. It has since been called the Fudo Enclosure. After the Meiji Restoration, the castle site continued to deteriorate, so local people built the stone monument of the birthplace of Shingen Takeda in 1929 to preserve them. The title of the monument was written by Heihachiro Togo, a famous admiral of the Japanese Imperial Navy. The castle ruins have been designated as a National Historic Site since 1991.
the Takeda AcalaThe stone monument for the birthplace of Shingen Takeda at the Main Enclosure
My Impression
I recommend visiting both ruins of Yogaiyama Castle and Takeda Clan Hall at the same time because you will be able to see how the Takeda Clan protected their home base. They must have been like one castle or a set. On the other hand, let me ask one thing to Kofu City. In the ruins of Takeda Clan Hall, excavations and studies are often being done in recent years. However, why have the ruins of Yogaiyama Castle not been developed? More explanations is needed for historical fans at the site. Some parts of the ruins are covered with bushes. I hope in the future that the city will develop this mountain castle ruins as a set with Takeda Clan Hall.
The ruins of Takeda Clan HallA Masugata entrance of Takeda Clan Hall (The northern entrance of the Western Enclosure)Excavations are ongoing at Takeda Clan Hall RuinsA situation of Yogaiyama Castle Ruins
How to get There
I recommend using a car when you visit the castle ruins because there are few buses to visit them. It is about a 20-minute drive away from Kofu-minami IC on the Chuo Expressway. There is a parking lot in front of the trail entrance to the castle ruins. If you want to use public transportation, you can take the Yamanashi-Kotsu Bus bound for Sekisuiji Temple from JR Kofu Station and ride to the end. It takes about 15 minutes on foot from the bus stop to get the entrance. To get to Kofu Station from Tokyo: Take the limited express Azusa or Kaiji at Shinjuku Station.
