Discover the Secrets of Karasawayama Shrine and Castle Remains

Quiz Time!

Do you know which Japanese family name is the most common? Honda, Suzuki, or Satoh?

The answer is hidden in history, going back over a thousand years to the powerful Fujiwara clan. Curious? Read on to learn the story and discover a special site in Tochigi Prefecture for your next trip.

A Must-See: Karasawayama Shrine

Are you visiting Nikko? Add a cultural treasure to your trip! Karasawayama Shrine in Sano City, Tochigi Prefecture, and the remains of its historic mountain castle offer breathtaking views and a glimpse into Japan's rich history.

From Tengu Iwa, visitors can see a stunning view of Tokyo's skyscrapers, the vast Kanto Plain, and famous mountains like Mt. Fuji, Mt. Asama, Mt. Akagi, Mt. Nantai, and Mt. Tsukuba. This site was once a vital lookout and defensive stronghold for samurai.

Although it lacks a castle tower, Karasawayama Castle is regarded as the finest mountain fortress in the Kanto region. It is famous for withstanding ten attacks by Uesugi Kenshin during the Warring States period (Sengoku Jidai). 

The surrounding area features hiking trails, offering a scenic and enjoyable trek—though caution is advised due to the slight possibility of encountering bears.

Step Into the Past

At the top of a 242-meter mountain lies Karasawayama, once the castle of the Sano family. The Sano were descendants of Fujiwara no Hidesato, a famous military leader from the 10th century. 

Fujiwara no Hidesato once battled a fearsome demon known as Domeki, a creature covered in a hundred eyes.

Because of this ancient legend, the area has gained popularity among Demon Slayer (Kimetsu no Yaiba) fans. It is considered a special place in Tochigi Prefecture, much like Ashikaga Flower Park, famous for its stunning wisteria blossoms.

In Japanese, wisteria is called "Fuji." Have you noticed? This is the same "Fuji" found in the Fujiwara name!

Hidesato belonged to the Fujiwara clan, a powerful aristocratic family that played a crucial role in Japan’s history. They held significant influence in the imperial court and were known for their strong political and military presence. 

Samurai and Battles

During Japan’s turbulent past, samurai were pivotal in shaping history. Among them, Fujiwara no Hidesato was a key figure, known for his military strength and loyalty to the imperial court.

One of the most famous events of his time was the conflict with Taira no Masakado, a powerful samurai and descendant of Emperor Kanmu, who attempted to establish an independent state in the Kanto region.

Determined to maintain order, Hidesato joined forces with Taira no Sadamori, leading a campaign that ultimately defeated Masakado.

Although Masakado’s rebellion was crushed, his legacy endured. Over time, he became a respected figure, even honored at Kanda Myoujin Shrine in Tokyo.

Meanwhile, Hidesato’s success further raised his status, and his descendants founded many notable samurai families across Japan.

Cats, Nature, and More

By the way, start your visit to the shrine at the mid-mountain parking lot and entrance gate, where friendly cats will welcome you! This area is known as a shelter for stray cats, but most are very sociable. Visitors can buy cat food at the rest house to feed them.

As you walk up to the shrine, the changing seasons surround you. Enjoy cherry blossoms in spring, azaleas in summer, and autumn leaves in fall—a natural wonder in every season.

Quiz Answer

The most common Japanese family name today is "Satoh", with almost 2 million people. The name comes from Fujiwara no Hidesato—“Sa” from Sano City and “Toh” from Fujiwara. Interestingly, the kanji for “Fuji” can also be read as “Toh.”

Visit Karasawayama Shrine and step into a story from over a thousand years ago. This trip offers more than history—it’s a journey through time.

How to Get There

By Train: Take the JR Ryomo Line from Oyama Station to Sano Station (26 minutes). 
Keep in mind, trains run only once per hour.
From Sano Station: A taxi from the south exit takes about 20 minutes.

Alternative: Direct taxis from Oyama Station are more convenient but pricier.