English – ページ 130 – 日本200名城バイリンガル (Japan's top 200 castles and ruins)

149.Komakiyama Castle Part3

The mountain and ruins protected by the Tokugawa Clan

Later History

After the battle in 1584, Komakiyama Castle was abandoned again. In the beginning of the Edo Period, parts of the huge stones were taken away for the construction of Nagoya Castle. You can see one stone which was divided but was not used in the construction. During the Edo Period, the Tokugawa Clan banned people from entering Mt. Komakiyama, because the place was the site of the ruins of their founder Ieyasu’s victory and fortune. For many years during the Modern Times, the mountain was privately owned by the Tokugawa Clan. It is said that it made the foundation of the castle very durable. The ruins were designated as a National Historic Site in 1927 after the Tokugawa Clan donated the mountain to the nation.

The stone which was divided but was not used in the construction for Nagoya Castle

The cross section of the earthen walls at the north entrance

My Impression

It was believed previously, that Komakiyama Castle was just a temporary position for Nobunaga to plan his next step. However, the achievement of the recent excavation made people change their ideas about the castle. I was actually surprised to see the remains of the huge stones and learned they came from Nobunaga’s ideas about castle building. I am looking forward to seeing new discoveries and studies in the future.

The remaining huge stones on the mountain

How to get There

If you want to visit there by car:
It is about 10 minutes away from Komaki IC on Tomei Expressway.
There are several parking lots around the mountain including the Komaki City Hall.
By train, it takes about 30 minutes on foot from Komaki Station on Meitetsu Komaki Line.
To get to Komaki Station from Tokyo or Osaka: Take the Tokaido Shinkansen Super Express, get off at Nagoya Station, transfer to the Higashiyama Subway Line, transfer at Sakae Station to the Meijo Subway Line, and transfer at Heandori Station to Meitetsu Komaki Line.

Links and References

・Komakiyama, Komaki Civic Cultural Foundation

That’s all.
Back to “Komakiyama Castle Part1”
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149.Komakiyama Castle Part2

You can see the legacies of Nobunaga and Ieyasu

Features

Mountain and Castle surrounded by Earthen Walls

Now we can still see Mt. Komakiyama covered with the green of the plants noticeable on the plain area. The building on the top is the Komaki City History Museum which looks like a Main Tower. Komaki City has been developing the whole of the mountain as a historical park. The city opened Komakiyama Castle Historical Site Information Center at the foot in 2019.

A view of Mt. Komakiyama from the city area

The aerial photo around the castle

When you get close to the mountain, you can find earthen walls and dry moats surrounding it. They were made by Ieyasu Tokugawa when the Battle of Komaki and Nagakute happened in 1584. From the Miyukibashi Entrance of the eastern side, you can enter the park across the wooden bridge through the alternate earthen walls. The bridge is not original but was built just for tourists to enter the park easily. Inside the walls, there are plain enclosures which were used for the houses of Nobunaga and his retainers, and also used as military posts of Ieyasu’s troops.

The mountain surrounded by the earthen walls

Main Road similar to Azuchi Castle

From the Main Entrance of the southern side, you can walk up the Main Route, which Nobunaga originally created, to the mountain. The route goes up straight to the mid-slope of the mountain and becomes zigzagged in the upper part. This formation is very similar to that of Azuchi Castle which was Nobunaga’s last home base. This meant he had his own ideas about building castles from an early age.

*The Main Route of Azuchi Castle* (above the mid slope)

Remaining Huge Stones and Stone Walls on Mountain

The Komaki City History Museum is on the top of the mountain where the Main Enclosure was. Around the top, you can see several huge stones lying down. In fact, these stones originally were built in the stone walls surrounding the Main Enclosure. Part of the stone walls still remain, and they were thought to be built by Ieyasu, not Nobunaga. However, the recent excavation found out that Nobunaga built these stone walls using huge stones. They were made into three tiers to demonstrate his authority. They are now recognized as a very early example of stone walls for a castle built in Nobunaga’s unique way.

The Komaki City History Museum *(licensed by Bariston via Wikimedia Commons)*

To be continued in “Komakiyama Castle Part3”
Back to “Komakiyama Castle Part1”

149.Komakiyama Castle Part1

The castle had a very short life but rich history.

Location and History

Nobunaga’s Foothold

Komakiyama Castle was located on an 86m high mountain called Komakiyama, on Nobi Plain in Owari Province, what is now the western part of Aichi Prefecture. The mountain had no castle until Nobunaga Oda built a castle on it in 1563. The reason for it was that he wanted to move his home base from Kiyosu Castle in now Nagoya City to this castle. He aimed to capture Inabayama Castle, what is now Gifu City, which the Saito Clan owned at that time. Komakiyama was much closer to Inabayama than Kiyosu. However, it was very rare for warlords and their retainers to move their home to another. They always continued to live in places where their ancestors had been.

The location of the castle

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)

Three Distinct Features

Komakiyama Castle by Nobunaga had three distinct features. First, the Main Enclosure or Honmaru on the top was surrounded by stone walls made using huge stones. Some of the stones were carried from another mountain. At that time, building stone walls for castles was rare, and there was likely no other case like Komakiyama. It was one of the earliest examples of using stone walls as a show of authority.

The remaining stone walls on the mountain

Secondly, the castle had two residences for the lord, one was on the mountain, the other was at the foot. Other warlords who had a mountain castle also often had two residences. They usually lived in the one on the foot and used the one on the mountain when a battle happened. However, in the case of Nobunaga, he seemed to live in his residence on the mountain. He might have considered the mountain as a special place. Another similar example can be seen in Gifu Castle, his next home base.

Lastly, the Main Route went straight from the foot to the mid-slope of the mountain like Azuchi Castle, his last home base. It was abnormal for other warlords to have such a route on the mountain, because it was not defensive. The reason is still unsure, but it must have depended on Nobunaga’s idea. In addition, its castle town was built in an advanced way in an area where nothing existed prior. The town was divided orderly to accommodate warriors, merchants, and craftsmen separately. Such a way to develop castle town is commonly seen in those in the next century.

The miniature model of the castle town distribution at the site

Ieyasu’s Stronghold

The life of the castle by Nobunaga was just four years, as he was successful in capturing Inabayama Castle in 1567. He moved his home base again to Inabayama castle and renamed it Gifu Castle. Komakiyama Castle was abandoned right away. In 1584, the castle was reused by Ieyasu Tokugawa when he fought with the ruler Hideyoshi Toyotomi in the Battle of Komaki and Nagakute. Ieyasu reinforced earthen walls and dry moats surrounding the castle to establish a stronghold there against Hideyoshi at Inuyama Castle. This battle resulted in a dead heat and Ieyasu showed his great presence towards the founder of the Tokugawa Shogunate later.

*The Portrait of Ieyasu Tokugawa, attributed to Tanyu Kano, owned by Osaka Castle Museum (licensed under Public Domain via Wikimedia Commons)*

To be continued in “Komakiyama Castle Part2”