A City of History, Nature, and Culture — 6 Popular Tourist Spots in Ota City, Gunma Prefecture

Ota City, located in the southeastern part of Gunma Prefecture, is home to around 220,000 people. Known as one of the leading industrial cities in the northern Kanto region, Ota blends modern development with a deep-rooted historical and cultural heritage.

The city’s long history is evident in the many historical sites and tourist attractions scattered throughout the area, creating a unique harmony between tradition and modern life. Ota is also famously linked to Yoshisada Nitta, a distinguished samurai warrior featured in the classic Japanese war chronicle Taiheiki, who lived through the late Kamakura to the Nanboku-chō period.

Nature lovers will also find plenty to enjoy in Ota. From the scenic Kanayama Nature Park to the family-friendly Gunma Kodomo no Kuni (Gunma Children's Land), the city is home to numerous parks and green spaces, offering a peaceful escape into nature right within the city limits.

Discover the charm of this city where history, nature, and culture coexist. Here are six must-visit tourist destinations in Ota City, Gunma Prefecture!

1. Yabuzuka Onsen, the Hidden Hot Spring of Nitta Yoshisada

When it comes to hot springs in Ōta City, Yabuzuka Onsen is the go-to destination. Beloved by locals and hot spring enthusiasts alike, it's affectionately known as “Nitta Yoshisada’s Hidden Hot Spring.” The nickname comes from an old legend: during his campaign against Kamakura, Nitta Yoshisada is said to have brought his wounded soldiers here to heal.

Interestingly, Yabuzuka Onsen boasts a long and storied history—it is believed to have been discovered by the Buddhist monk Gyōki during the reign of Emperor Tenji, making it one of the oldest hot springs in the region.

Although the onsen town itself is not large in scale, it exudes a peaceful charm with its cozy inns that quietly nestle into the landscape. This tranquil atmosphere has long offered visitors a soothing escape from the hustle and bustle of city life.

For over a thousand years, the hot spring has continued to flow without pause, offering a generous supply of mineral-rich water. The spring water is a clear and silky bicarbonate-type onsen, known for its benefits to both men and women. Not only does it leave your skin soft and smooth, but it also helps to stimulate liver function, which is why it’s long been cherished in Ōta City as the “Hot Spring for the Liver.”

Around the Yabuzuka Onsen area in Ōta, you’ll find various tourist attractions, including Mikazuki Village—famous for the fictional character Kogarashi Monjirō—and the unique Snake Center.

After a day of sightseeing, unwind and rejuvenate at Yabuzuka Onsen.

2. Gunma Kodomo no Kuni (Gunma Children’s Land)

Located in Ota City, Gunma Kodomo no Kuni is a beloved tourist spot not only for families but also for couples and groups of friends. Its popularity spans all ages, making it a top destination in Ota for recreation and relaxation.

If you’re looking to enjoy exciting activities surrounded by Ota’s rich natural environment, this is the perfect place. Spanning an impressive 18.7 hectares, the park is filled with attractions—so many, in fact, that one day isn’t enough to enjoy everything. Adults and children alike can have a blast and relive their childhood in this expansive wonderland.

One of the most thrilling highlights is the Summer Bobsled ride. Visitors hop on a gondola called the Panorama Chair and head to the mountain’s summit. From there, they ride a special sled down a dedicated track, zooming down the slope with breathtaking speed. It’s a favorite attraction for tourists seeking fun and excitement.

There’s also a Cycle Plaza, where you can try a Cycle Monorail that feels like a walk in the sky, as well as unique and quirky bicycles to ride around. The Outdoor Area features a full-scale athletic course, a fountain pool, a bird-watching hut, and a hydrangea garden—plenty of reasons to visit again and again throughout the year.

Various workshops like woodworking and ceramics classes are regularly held. Many children also join the "Fureai Club," which promotes learning about the connection between people and nature. Seasonal programs such as caterpillar watching and bird watching ensure there’s something fun no matter when you visit.

There are also shops and restaurants in the park, but on sunny days, why not bring a picnic and relax on the grass, soaking in the natural beauty of Ota City?

3. Japan Snake Center

The Japan Snake Center, located in the Yabuzuka Onsen area of Ota City, Gunma Prefecture, is a unique zoo dedicated to the breeding, exhibition, and research of snakes. Originally established as a research facility rather than a tourist attraction, it is operated by the Japan Snake Institute Foundation. Among locals, it's affectionately known as the “Hebi Center” (Snake Center) and is considered one of Ota City’s most iconic and popular sightseeing spots.

Although the number of snakes has declined compared to its peak, you can still observe a wide variety of species in the Venomous Snake Greenhouse, the Giant Snake Greenhouse, and the outdoor enclosures.

Events held on both weekdays and weekends are a big hit with visitors. Highlights include live venom extraction demonstrations with pit vipers and feeding sessions, drawing snake enthusiasts and curious travelers from all over Japan. The center also provides educational insights on the dangers of snakes and first-aid measures in case of a bite.

One of the most exciting activities is the “Snake Interaction Time”, where you can touch and play with snakes—a rare and memorable experience for any visitor.

Overlooking the outdoor area is the White Snake Kannon, a beautiful white statue built as a memorial for snakes that gave their lives for scientific research.

The facility also houses a rare dining area where you can try exotic snake cuisine. Daring guests can savor unique dishes like fried snake, stir-fried striped snake with green onions, grilled snake kabayaki-style, and even live pit viper sashimi. If you’re feeling brave, this could be a truly unforgettable part of your Japan adventure!

4. Kosodate Donryu "Daikoin”, A Temple Cherished for Child Rearing and Blessings

Daikoin Temple is a Jodo sect temple located in Kanayama-cho, Ota City, Gunma Prefecture. Its full name is Gichosan Nittadera Daikoin. The temple enshrines Nitta Yoshishige, known as an ancestor of the Tokugawa family, and also serves as the home of Benzaiten, one of the Seven Lucky Gods of Gunma.

Locals affectionately call the temple "Kosodate Donryu" or "Donryu-sama." The name "Donryu" refers to Donryu Shonin, the founding monk of Daikoin. It is said that Donryu Shonin took in and raised many poor children as his disciples. Thanks to this legacy, the temple has come to be known as a sacred site for child-rearing prayers. Even today, families and tourists visit to pray for their children’s healthy growth and happiness.

Behind the main hall, you will find the graves of Nitta Yoshishige and Donryu Shonin. In front of the main hall stands a magnificent black pine tree known as Garyu-matsu, and the temple gate is adorned with elaborate carvings—both considered highlights of Daikoin.

Daikoin also hosts the Kanto Chrysanthemum Festival from late October to late November every year. Visitors can enjoy stunning chrysanthemum displays free of charge, attracting many tourists from far and wide during the late autumn season.

5. Kanayama Castle Ruins, a Historic Site

Kanayama Castle, located almost in the center of Ōta City, Gunma Prefecture, was a strategically built fortress from the Sengoku period. It sits atop the 235.8-meter-high Mount Kanayama, a standalone peak. This mountain castle (yamajiro) was designed to take full advantage of the natural terrain, with its fortifications covering the entire mountain area.

Recognized as a valuable medieval castle, the ruins of Kanayama Castle were designated as Gunma Prefecture’s first National Historic Site in 1934 (Showa 9). Later, in 2006 (Heisei 18), it was selected as one of the “Top 100 Castles of Japan.”

Today, the site of the castle’s main keep (Honmaru) is home to Nitta Shrine, and remnants of the original stone walls can still be seen in the area. With its breathtaking views overlooking the Kanto Plain, the Kanayama Castle Ruins are not only a significant historical landmark but also one of the best night-view spots in Ōta City, popular among tourists.

To the west of the mountain, you’ll find two scenic ponds named Hi-no-Ike (Sun Pond) and Tsuki-no-Ike (Moon Pond). On the southwestern side are the ruins of Ninomaru (second bailey) and Sannomaru (third bailey). Here, you can also see the bust of Chikuhei Nakajima, the founder of Nakajima Aircraft Company—predecessor of today’s Subaru.

Kanayama today is well-maintained and easily accessible for visitors, making it a great destination for sightseeing. Be sure to stop by during your trip to Ōta City and enjoy the beautiful scenery throughout the seasons!

6. Mikazuki Village

Step back in time to the Edo Period at Mikazuki Village, a fascinating historical theme park located in Ota City, Gunma Prefecture. This popular attraction, enjoyable for both children and adults, immerses visitors in a world inspired by the works of Japanese author Saho Sasazawa—especially the setting of his famed novel "Kogarashi Monjirō."

When the television adaptation of "Kogarashi Monjirō" aired in 1972 starring Bunta Sugawara, it became an instant hit across Japan. The show's fictional setting was named Mikazuki Village in Jōshū Nitta District, which also became the namesake of this nostalgic theme park.

Upon entering the park, you'll pass through a tunnel and find yourself face-to-face with iconic sights like a fire watchtower, water mill, and a charming shrine for votive plaques. The entire area beautifully recreates the ambiance of Edo-era Japan. The main street of the park features nostalgic storefronts such as an old-fashioned toy shop, a general store selling traditional travel gear, and a soba noodle shop known for its flavorful broth.

As you explore deeper, you’ll discover attractions like the Trick Mansion (Karakuri Yashiki) and the Mysterious Warehouse (Fukashigi Dozo), both adding to the old-time Japanese charm.

One must-visit spot inside Mikazuki Village is the "Kaii Gendō", a thrilling underground exploration attraction. Venture into a mysterious cave with eerie sound effects, flowing water, and bursts of hot air. It's an exciting experience for both adults and children.

Whether you're a fan of the original series or just looking to enjoy a nostalgic adventure, Mikazuki Village is a must-see sightseeing destination in Ota City.

◎ Summary

We’ve introduced some of the most popular tourist spots in Ōta City—how did you like them?

When people think of Gunma, hot springs usually come to mind. You may have already visited famous onsen areas like Kusatsu or Minakami, but perhaps not Ōta. However, as you've seen in this article, Ōta is home to numerous attractions where history, nature, and culture come together in a charming and accessible way.

We hope you’ll use this guide as your starting point to enjoy a slightly off-the-beaten-path journey through Ōta’s unique and nostalgic sights!