The ruins became the Yoshinogari Historical Park instead of an industrial park.
Later History
With the start of the Burial Mound Period in at the late 3rd Century, the Yoshinogari settlement rapidly decreased. Four keyhole-shaped burial mounds were built on the land of Yoshinogari. After a long time, local historians noticed that a lot of pieces of burial jars and earthenware were found in the area about 100 years ago. In 1986, Saga Prefecture decided to develop the area as an industrial park. As a result, before the development, there were some research on the buried cultural properties. Yoshinogari Ruins were meant to be destroyed after the research. However, the huge scale ruins were revealed in 1989. The media reported the ruins sensationally as if they were the Yamatai Country. Visitors suddenly rushed to the ruins, too. The prefecture reversed its decision and announced it would preserve the ruins instead. The ruins were designated as a National Special Historic Site in 1991. The Yoshinogari Historical Park finally opened in 2001.
The aerial photo of Hashihaka-kofun Tumulus, a representative keyhole-shaped burial mound in the 3rd Century in Nara Prefecture
My Impression
I think there are no other ruins like the Yoshinogari Ruins, which show the real image of the Yayoi Period. The ruins can be seen as a theme park rather than a historical park. You can see the settlements already had some elements of castles found in Japan later on. However, it’s up to you whether Yoshinogari Ruins should be considered are a kind of castle or not. I recommend visiting them and making your own impression.
How to get There
If you want to visit the ruins by car, it is a few minutes away from Higashi-Sefuri IC on the Nagasaki Expressway. You can park in the parking lots for visitors in the park. If you want to use public transportation, it takes about 15 minutes on foot from the JR Yoshinogari-koen Station. To get to Yoshinogari-koen Station from Tokyo or Osaka: Take the limited express from Hakata Station and transfer to the local train on the Nagasaki Line at Tosu Station, after using the Shinkansen super express or by plane.
If you have time, consider walking to the remaining Outer Moat from the Main Enclosure. If you walk along the edge of the enclosure, you will see the long line of the stone walls. Some of them were recently restored including the stone wall base of the Southwestern Corner Turret. The original appearance of the castle is returning little by little with the restoration. The Outer Moat is still filled with water and is over 50m wide. It can remind us that the castle was originally protected by many water moats and waterways.
The aerial photo around the castle
Later History
After the Meiji Restoration, Saga Castle was used as the Saga Prefectural Office. That’s why a battle in the Saga Rebellion occurred there. After the rebellion, the surviving Main Enclosure was used as schools. However, the Main Hall was demolished in 1920 while the residential room for the lord was moved to another park. The remaining Shachi-no-mon Gate was designated as an Important Cultural Property in 1957. In 1989, Saga Prefecture decided to restore the Main Hall as a historical museum. After the excavation and research. The official part of the hall, called Omote, was mainly restored combined with the residential room for the lord which returned to its original position. The Main Hall reopened as the Saga Castle History Museum in 2004.
My Impression
Saga Prefecture is trying to show what roles the Saga Domain had in the end of the Edo Period, in the restored Main Hall. There are also other attractions like the stone wall base for the Main Tower. If you compare these structures, you may find the functions of the castle have been changing. The water moats were entirely for defense. The Main Tower added to the castle its authority. The Main Hall was built for governing and residence. They composed the wide variety of functions at Saga Castle.
How to get There
If you want to visit the ruins by car, it is about 20 minutes away from Saga-Yamato IC on the Nagasaki Expressway. You can park in the parking lots for visitors in the Main Enclosure. If you want to use public transportation, you can take the Saga City Bus on the Sagajo-ato Line from JR Saga Station and get off at the Sagajo-ato bus stop. To get to Saga Station from Tokyo or Osaka: Take the limited express from Hakata Station after using the Shinkansen super express or by plane.
The Saga Domain contributed to the modernization of Japan.
Location and History
Nabeshima Clan develops Castle as Home Base
Saga Castle was located in what is now Saga City, the prefectural capital of Saga Prefecture. The castle was originally named Muranaka Castle and built by the Ryuzoji Clan which was a great power in the 16th Century during the Sengoku Period. However, the power of the clan decreased after it was defeated by the Shimazu Clan in the Battle of Okita-nawate in 1584. Instead, the Nabeshima Clan, a senior vassal of the Ryuzoji Clan, got the power and was finally assigned as the lord of the Saga Domain by the Tokugawa Shogunate. The Nabeshima Clan improved Muranaka Castle sometime in the early 17th Century, when it was renamed Saga Castle.
The location of the castle
The castle was built in the riverside area on the Saga Plain. The castle mainly consisted of the Main, Second and Third Enclosures, which were surrounded together by the large Outer Moat. The Main and Second Enclosures were connected directly in the southeastern part of the castle, separated from the Third Enclosure by the Inner Moat. Only the Main Enclosure was surrounded by stone walls, but others were surrounded by earthen walls. The Main Enclosure also consisted of the Main Tower, but its details are uncertain, as most of the castle buildings were burned down by a great fire in 1726. After that, the center of the castle was at the Main Hall on the Second Enclosure. However, it was burned down as well due to another significant fire in 1835.
Naomasa Nabeshima modernizes Saga Domain
Much focus was on the Saga Domain and Saga Castle at the end of the Edo Period. The domain had been responsible for the police escort in Nagasaki which was the only official international port in Japan at that time. However, they failed and allowed a British ship, whose crew started a riot in the port in 1808, known as the Phaeton Incident. After that, the domain promoted its modernization led by the 10th lord, Naomasa Nabeshima. He governed the domain from the new Main Hall in the Main Enclosure, rebuilt in 1837. Under his leadership, the domain imported the latest cannons from the West and began to produce their own cannons themselves. Surprisingly, they were successful at it for the first time in Japan, which was before the arrival of Matthew Perry’s fleet from the U.S. in 1853. The Tokugawa Shogunate asked Naomasa to provide the domestic cannons for Shinagawa Batteries in Edo Bay which were prepared for the second arrival of Perry. The domain offered 50 cannons.
Saga Domain was relied on due to their modern military power by both the Tokugawa Shogunate and the New Government during the Meiji Restoration. The domain chose to support the New Government, becoming one of the four powerful domains including the Satsuma, Choshu and Tosa. It is said that one reason that the New Government defeated the shogunate was the strong cannons the Saga Domain imported or made. Naomasa became one of the most important politicians at the beginning of the Meiji Era until he died in 1871. Naomasa also promoted his retainer, Shinpei Eto, to another important position in the government before he retired. Shinpei tried to bring the latest social systems from the West – such as education, justice and the idea of a parliamentary system – to Japan to help modernize the country. He has often been recognized as the father of the modern Japanese judicial system.
Castle is burned during Saga Rebellion
However, lost power and authority to other politicians from Satsuma and Choshu in the political strife in 1873. He returned to Saga, asking for the launch of the parliament by democratic election to form a government. The government leader from Satsuma, Toshimichi Okubo, did not allow Shinpei’s agenda. It has been even said that he feared and envied Shinpei’s excellent abilities which might have overpowered him. Toshimichi intentionally spread the information as if Shinpei was planning to rebel against the government. He also sent his troops to Saga to force Shinpei along with his supporters to fight, known as the Saga Rebellion in 1874. Shinpei was defeated by the government, and subsequently put to death without judicial proceedings by Toshimichi, who ruled as a dictator. Saga Castle was one of the battle locations of the rebellion; unfortunately, most of the castle was burned down, again due to fire, during the battle.