The Sanada Family and Their Years in Kudoyama
Zenmyoshoin stands on a site traditionally believed to have been the location of the hermitage where Sanada Masayuki and Sanada Nobushige (Yukimura) lived after their defeat at the Battle of Sekigahara in 1600.
Because the Sanada father and son had supported the losing Western Army, they were sent into exile in the Koyasan area. However, the severe cold and difficult living conditions on Mount Koya eventually led them to move down to the foothills, where they settled in Kudoyama. They are said to have spent many years here.
Masayuki eventually died in Kudoyama. Nobushige is traditionally said to have erected a memorial pagoda for his father. In 1741, during the Edo period, a Buddhist monk named Daian Shonin enshrined a statue of Jizo Bodhisattva at the site and began developing it as a temple. This is regarded as the beginning of Zenmyoshoin.
A Temple Surrounded by History and Legend
After the temple was established, a legend arose that the spirit of Sanada Masayuki appeared before Daian Shonin. According to the story, Daian enshrined Masayuki as Sanada Jishu Daigongen, a guardian deity associated with the Sanada family. The spirit then appeared peacefully and promised to protect the area.
This story became deeply rooted in the faith of local residents and has been passed down through generations. As stories and popular tales about the Sanada family became increasingly popular during the Edo period, the temple came to be known as Sanada-an. The site attracted many worshippers and visitors fascinated by the legendary samurai family.
Interest in the temple has grown further in modern times, particularly through the popularity of historical television dramas featuring Sanada Yukimura.
Distinctive Architecture and Highlights
The Main Hall and Its Unique Eight-Roof Design
The main hall of Zenmyoshoin is designated as a Wakayama Prefectural Tangible Cultural Property. One of its most striking features is its unusual Yatsumune-zukuri, or “eight-ridge” architectural style.
The complex arrangement of roofs gives the building a powerful and almost castle-like appearance. Its impressive form reflects the sophisticated carpentry techniques of the late Edo period and makes the main hall one of the most memorable sights within the temple grounds.
Doshado Hall and the Mausoleum of Daian Shonin
The temple grounds also contain the Doshado Hall, associated with the Buddhist practice of dosha kaji, a ritual involving consecrated sand, as well as the mausoleum of Daian Shonin, the monk credited with establishing the temple.
Both are designated as Wakayama Prefectural Cultural Properties. Their quiet surroundings provide a peaceful setting in which visitors can appreciate the religious traditions and architectural heritage of the period.
Historic Sites Connected to the Sanada Family
Several sites connected with the Sanada family can be found within the temple grounds. These include the traditional grave of Sanada Masayuki, graves associated with Sanada retainers, and a shrine dedicated to Sanada Jishu Daigongen.
Another intriguing feature is a well known as the “Thunder-Sealing Well.” According to local legend, Sanada Nobushige once trapped thunder inside the well. Such stories add an element of mystery and historical romance to a visit to the temple.
Discover the Sanada Family at the Treasure Museum
The temple grounds are also home to the Sanada Treasure Museum, where visitors can learn more about the lives of Masayuki and Nobushige during their years in Kudoyama.
The collection includes historical materials associated with the Sanada family, such as weapon fittings, armor and helmets, letters, and portraits. These exhibits offer a closer look at the world of samurai during Japan’s Warring States period.
The museum also introduces items connected with everyday life and local industries, including Sanada-himo, a strong woven cord traditionally associated with the Sanada family, and tools used to produce Koya paper. These exhibits help visitors understand not only the military history of the Sanada family but also the practical life and industries of Kudoyama at the time.
Seasonal Beauty and Traditional Events
Zenmyoshoin is also known for its beautiful peonies. In spring, colorful flowers bloom throughout the temple grounds, creating an attractive contrast with the historic buildings. The peaceful scenery is particularly popular with visitors interested in photography and seasonal landscapes.
The temple also hosts traditional events throughout the year. One of the most notable is the Sanada Festival, held on May 5. A samurai procession makes its way through Kudoyama and ends at Zenmyoshoin, bringing the town to life with a strong sense of history and tradition.
Other traditional events, including the Setsubun Hoshi Festival and Jizo Bon, are also preserved as part of the local cultural heritage. These occasions provide an opportunity to see how historical religious traditions continue to play a role in the community.
Sanada Kofun and the Legendary Secret Passage
Just east of Zenmyoshoin is a site known as the “Sanada Secret Passage.” For many years, local tradition held that this opening was connected to Osaka Castle through a secret underground passage that the Sanada family could use to travel secretly.
Archaeological investigations, however, revealed that the site is actually a keyhole-free burial mound with a horizontal stone chamber dating from the Kofun period. It is now known as Sanada Kofun.
Although its true origin differs from the old legend, the site remains an intriguing destination where archaeology and samurai folklore come together. It is a fascinating stop for visitors who enjoy the historical mysteries surrounding Japan’s past.
How to Visit and Enjoy the Area
Zenmyoshoin is conveniently located about a 10-minute walk from Kudoyama Station on the Nankai Koya Line. Its convenient location makes it easy to include in a walking tour of Kudoyama.
The surrounding area features several other attractions associated with the history of the Koya-san region, including the Sanada Museum and Jison-in Temple. Together, these sites offer an excellent way to explore the area’s connections with Buddhism, pilgrimage, and the Sanada family.
Kudoyama itself retains many quiet streets and traditional townscapes. Walking through these atmospheric lanes while imagining the lives of the Sanada family centuries ago is one of the most rewarding ways to experience the town.
A Must-Visit Destination for History Lovers
Zenmyoshoin Temple, or Sanada-an, is one of Kudoyama’s most important historical and cultural attractions. The temple brings together the history of Sanada Masayuki and Sanada Yukimura, Buddhist traditions, distinctive architecture, local legends, and beautiful seasonal scenery.
From the impressive main hall and Sanada-related monuments to the treasure museum and the legendary secret passage, there is much to discover within and around the temple grounds. Visitors can also enjoy the peaceful atmosphere of Kudoyama while exploring the town on foot.
Whether you are fascinated by Japan’s samurai history, interested in Buddhist temples, or simply looking for a peaceful cultural destination away from the major tourist centers, Zenmyoshoin Temple offers a memorable glimpse into the history and legends of the Koya-san region. Be sure to include Sanada-an in your Kudoyama itinerary and experience the stories of the Sanada family for yourself.