You should also check out the back part of the castle.
Features
After passing Nakanomaru Enclosure, you will see Kyogoku-maru Enclosure where Nobunaga’s retainer, Hideyoshi, first captured in the castle. Komaru Enclosure where Nagamasa’s father, Hisamasa, lived as a retreat is close behind the Kyogoku-maru Enclosure. That’s probably why he was defeated soon in the battle.
The map around the castle
Nakanomaru EnclosureKyogoku-maru EnclosureKomaru Enclosure
Finally, Sanno-maru Enclosure is at the highest point of the ridge. You can see the largest and greatest remaining stone walls in the castle at the eastern side of the enclosure. It has four tiers, two more than the Main Enclosure. Some historians speculate that it is the actual Main Enclosure as those of other castles were usually the strongest and highest. In fact, almost all the names of the enclosures were defined after the actual period.
Sanno-maru EnclosureGoing to the large Stone WallsThe large Stone WallsThe imaginary of the Sanno-maru Enclosure, from the signboard at the site
Later History
After Odani Castle fell in 1573, Hideyoshi was given this castle by Nobunaga and lived there for a while. However, Hideyoshi built Nagahama Castle beside Biwa Lake in 1575 using some materials of Odani Castle. After he moved to the new castle, Odani Castle was eventually abandoned. The mountain the castle was built on became publicly owned until it was sold to local governments and private section in 1915. Then, local people started to preserve the castle ruins. As a result, the ruins were designated as a National Historic Site in 1937. Nagahama City, which now owns the ruins, is considering how to preserve them as well as letting people enjoy them.
The present Nagahama Castle (licensed by 663highland via Wikimedia Commons)The stone walls of Odani Castle which have collapsed
My Impression
In fact, the ruins of Odani Castle cover a much larger than I visited. The site also has many other attractions such as the branch Ozuku Castle, some ruins of another ridge of the mountain, and the hall ruins on the valley called Shimizudani sandwiched by the ridges. It would take a whole day to see all of them. I am looking forward to doing this someday.
The restored map of the whole ruins, from the signboard at the site
How to get There
If you want to visit the castle by car, it is about 5 minutes away from Odanijo Smart IC on the Hokuriku Expressway. There are parking lots at the foot or the mid slope of the mountain. By public transportation, it takes about 30 minutes on foot from the JR Kawake Station. To get to Kawake Station from Tokyo: Take the Tokaido Shinkansen super express and transfer to the Hokuriku Line at Maibara Station.
Odani Castle was a large mountain castle located in the northern part of Omi Province, which is now Shiga Prefecture. A local warlord of the Azai Clan, built the castle around 1520’s during the Sengoku Period. However, the clan was unfortunately defeated at this castle in 1573. As a result, the castle has been known to many people for Azai’s tragedy.
The range of Omi Province and the location of the castle
Omi Provence had been a very important location connecting western and eastern Japan. The Shoguns and rulers wanted to own or take control over this province. That’s why Nobunaga Oda made an alliance with Nagamasa Azai who was the lord of the clan by getting his sister Oichi married with Nagamasa before he went to Kyoto in 1568. However, Nagamasa rebelled against Nobunaga in 1570 when Nobunaga attacked the Asakura Clan which was another ally of the Azai Clan. The long battle between Nobunaga and Nagamasa had started.
The portrait of Nobunaga Oda, attributed to Soshu Kano, owned by Chokoji Temple, in the late 16th century (licensed under Public Domain via Wikimedia Commons)The portrait of Nagamasa Azai, owned by Jimyo-in Temple (licensed under Public Domain via Wikimedia Commons)
Castle is improved to fight against Nobunaga Oda
Odani Castle was built on a ridge of Odaniyama-Mountain (at 495m). It had many enclosures with halls which were surrounded by stone walls. It is thought that they were for living and showing authority to people rather than for battles at its first stage. This was because the lord of the castle sometimes escaped from the castle when it was attacked. However, in order to fight against Nobunaga, the castle was improved as a strong fortress with the help of the Asakura Clan. The castle also had many branch castles such as Ozuku Castle on the top of the mountain to protect the back side of Odani Castle.
The relief map around the castle
Nagamasa and the Asakura Clan fought against Nobunaga on a field in the Battle of Anegawa in 1570 but were beaten. Then, he decided to stay in Odani Castle waiting for his allies, the anti-Nobunaga Network beating Nobunaga. Nobunaga gave up making an aggressive attack on the castle, instead, he took actions to make it isolated bit by bit. His retainer such as Hideyoshi Hashiba persuaded some of Nagamasa’s retainers to support Nobunaga. That resulted in some branch castles of Odani Castle belonging to Nobunaga’s side without battles.
The Portrait of Hideyoshi Toyotomi, attributed to Mitsunobu Kano, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)
Castle is isolated after long battle, then falls
Nobunaga also built a new battle castle called Toragoze-yama Castle as his stronghold in front of Odani Castle. This made Nobunaga get supplies easier, while making it much more difficult for Nagamasa. In 1573, Nobunaga drove the Asakura Clan away from the most important branch, Ozuku Castle which they had held and captured it. Moreover, Nobunaga chased the clan down to their home base, Ichijodani Castle, and defeated them. As a result, Odani Castle was completely isolated.
The relief map around the castle
The ruins of Ichijodani Castle
In the castle on the ridge, Nagamasa was at the Main Enclosure in the lower part and his father, Hisamasa was at the Komaru Enclosure in the upper part. Nobunaga’s retainer, Hideyoshi Hashiba rushed up from the foot to the Kyogoku-maru Enclosure in the middle part and captured it on Aug 27th. That meant the castle and the Azai Family were divided. Hisamasa fell into crisis and killed himself performing Hara-kiri on the same day. Nagamasa held on for a few more days, but finally killed himself in the same way as his father, and the castle fell on Sep 1st.
The portrait of Hisamasa Azai, owned by Jimyo-in Temple (licensed under Public Domain via Wikimedia Commons)The restored map of the enclosures on the ridge, from the signboard at the site, adding the red letters for some enclosures’ names
Fates of Namasa Azai’s wife and children
Oichi, who was Nobunaga’s sister, but also Nagamasa’s wife, had still been at the castle and was saved by Nobunaga. She and Nagamasa had three daughters and at least one son. These daughters were also saved and later known as Azai’s Three Sisters including the oldest Chacha being Hideyoshi’s wife after he became the ruler of Japan. The son called Manpuku-maru was unfortunately killed as a common rule at that time not to be revenged by him. The heads of Nagamasa and Hisamasa’s were on public display in Kyoto also as another common rule. Nobunada made skull cups using their heads to share them with his retainers in a party. There were many different common practices at that times from us.
The portrait of Oichi, owned by Jimyo-in Temple (licensed under Public Domain via Wikimedia Commons)The statues of the three sisters, at the site of Kitanosho Castle Ruins
The stronghold of Katsuie Shibata in the Battle of Shizugatake
Location and History
A castle built against Hideyoshi Hashiba
Genbao Castle was located on the border between Echizen and Omi Provinces, which are modern day Fukui and Shiga Prefectures. It was built by Katsuie Shibata who owned Echizen Province when the Battle of Shizugatake happened in 1583. After the ruler, Nobunaga Oda died in the Honnoji Incident in 1582, his senior vassals, Katsuie and Hideyohsi Hashiba argued against each other over the initiative. Hideyoshi invaded the northern Omi Province, which Katsuie had owned, and started to build many battle castles near the border of Echizen Province which was the home base of Katsuie. Katsuie also confronted Hideyoshi by building his own battle castles around the border. Genbao Castle was the center of these battle castles and Katsuie’s stronghold. Part of its name Genba comes from an official post.”Genba” is the name given to warriors who are highly respected, but it is uncertain whose official name it came from.
The location of the castle
The portrait of Katsuie Shibata, from the signboard at the site of Kitanosho Castle RuinsThe Portrait of Hideyoshi Toyotomi, attributed to Mitsunobu Kano, owned by Kodaiji Temple (licensed under Public Domain via Wikimedia Commons)
Enclosures on Mountain Top
The castle was built on the top of Nakauchio Mountain which was 445m high and also the border. It was also able to control the road over a mountain pass between the provinces, called Tone-toge near the castle. The enclosures of the castle were built on the top of the ridge from the north to the south. The front of the castle was open to the south, the mountain pass and Omi Province where Hideyoshi invaded. Because of that, the southern side of the castle was strongly protected with two enclosures in line. On the other hand, the northern side had the largest enclosure which was used as a military post. The Main Enclosure was the center of the castle, where Katsuie probably lived. It had a Main Tower or large turret, and attached three projecting small enclosures called Umadashi or Overhang for defense.
The relief map around the castle
The layout of the castle, from the signboard at the site, adding red letters
Sakuma Morimasa’s offensive vs Hideyoshi’s counterattack
On the 16th of April 1583, Katsuie’s ally, Nobutaka Oda fought an army at Gifu Castle in Mino Province against Hideyoshi. Hideyoshi went to Mino Province to crush it on April 17th. Katsuie thought it was a good opportunity to attack Hideyoshi’s side. Morimasa Sakuma, who worked under Katsuie, moved onward to capture some of Hideyoshi’s battle castles on April 19th. However, that was Hideyoshi’s trap. Morimasa succeeded in capturing a battle castle, and wanted to get one more called Shizugatake Fortress. Then, Hideyoshi immediately got back to his original position and counterattacked Morimasa on April 20th. Katsuie and Morimasa were finally defeated by Hideyoshi. An old biography about Hideyoshi called Hoan Taikoki, published in 1626 by Hoan Oze, says Morimasa’s reckless actions caused his destruction although Katsuie advised him to withdraw after his first attack. Many Japanese people have believed it for a very long time.
The picture of the Morimasa Sakuma, attributed to Nobukazu Yousai, in 1893 (licensed under Public Domain via Wikimedia Commons)
Is Most Important Factor Toshiie Maeda’s withdrawal?
Recent studies show Morimasa’s actions were not critical. Toshiie Maeda, another ally of Katsuie, who would be a great lord after Hideyoshi became the ruler, eventually withdrew without Katsuie’s permission at the same time as Hideyoshi’s counterattack. It was the decisive trigger for Hideyoshi’s victory and Katsuie’s lost. Why didn’t Hoan describe this most important factor? The answer is that Hoan was a dependent of the Maeda Clan. The action of Toshiie Maeda, the founder of the clan, was probably promised to Hideyoshi, but later people would think it was a betrayal. It was thought Hoan was not able to record this fact which may be a shame of Maeda, therefore he blamed another person for the lost. Genbao Castle was strong, but was meant to work closely with other battle castles. Katsuie had to withdraw from the castle without a battle when his ally gave up on the duty.
The portrait of Toshiie Maeda, private owned (licensed under Public Domain via Wikimedia Commons)
