Hello to all the international visitors currently staying in Nagano Prefecture! From April to October—often referred to as the “Green Season”—the natural beauty of Nagano and other areas across Japan is at its very best. In this article, we will introduce some of the most popular destinations for the 2026 Green Season in a ranking format. Coming in at second place is Karuizawa, and our top pick for first place is sure to impress! We’ll also highlight trending locations this year, such as the historic Nakasendo, Matsumoto Castle, Kusatsu Onsen, SUP at Lake Nojiri, Togakushi Shrine, and Kurobe Dam.
3rd Place: Matsumoto Castle
Matsumoto Castle is a National Treasure known for having one of Japan’s oldest five-tiered, six-story keeps. Its striking black exterior has earned it the nickname “Crow Castle.” The surrounding castle town is dotted with charming cafés and souvenir shops, allowing visitors to experience both history and modern local culture. Seasonal events and nighttime illuminations also make it a fantastic spot for photography.
2nd Place: Karuizawa
Karuizawa is one of Japan’s most famous highland resorts, beloved for its refreshing climate. The area boasts stylish shopping districts and numerous outdoor activities like cycling and hiking. Whether you want to explore nature or indulge in exquisite cafés and restaurants, Karuizawa offers a refined getaway that has charmed international visitors for decades.
1st Place: Kamikochi
Claiming the top spot is Kamikochi, renowned as one of Japan’s foremost mountain resorts. Situated at an elevation of about 1,500 meters (4,921 feet), Kamikochi offers cool, crisp air even during the Green Season. Visitors can marvel at the majestic Hotaka mountain range and the crystal-clear Azusa River. The well-maintained hiking trails cater to everyone, from beginners to experienced trekkers. As a protected natural area, Kamikochi preserves pristine forests and rivers that will take your breath away.
2026 Trendy Spots to Check Out
In addition to our top three, there are numerous other places around Nagano and neighboring regions that deserve your attention this Green Season. Mix and match them in your itinerary to fully appreciate Japan’s diverse charms.
- Nakasendo
One of the five major routes from the Edo period. The Kiso region’s Tsumago-juku and Magome-juku are popular for their well-preserved historical post-town atmosphere, perfect for leisurely exploration.
- Kusatsu Onsen
Situated in Gunma Prefecture, Kusatsu Onsen is famed for its abundant hot springs and highly acidic waters. Its iconic Yubatake (hot water field) with billowing steam provides a unique and relaxing spa town experience.
- SUP at Lake Nojiri
Located in northern Nagano, Lake Nojiri is known for camping and water sports. Stand-Up Paddleboarding (SUP) has recently become a hot activity even for beginners.
- Togakushi Shrine
Surrounded by a stunning cedar-lined path, Togakushi Shrine is a mystical spot known for its spiritual aura. Don’t miss the local specialty, Togakushi soba, while you’re there.
- Kurobe Dam
Part of the famous Alpine Route and one of Japan’s largest dams. Summer brings spectacular sightseeing water discharges, and the surrounding Northern Alps scenery is simply breathtaking.
Travel Flexibly to Craft Your Own Journey
Japan’s key attractions are often spread across regions rich in natural beauty. Between each major destination, you may discover hidden hot springs, local restaurants serving regional delicacies, or workshops offering hands-on experiences in traditional crafts. Make sure to leave some flexibility in your schedule and choose transportation methods—whether it’s public transit, rental cars, taxis, or tour buses—that adapt to your needs. That way, you’ll have the freedom to create a truly one-of-a-kind journey.
Conclusion
From Kamikochi’s majestic mountain landscapes and Karuizawa’s highland charm to the historical elegance of Matsumoto Castle, Nagano’s Green Season (April to October) is full of experiences you won’t want to miss. Alongside these must-see locations, don’t forget to check out Nakasendo, Kusatsu Onsen, Lake Nojiri, Togakushi Shrine, and Kurobe Dam for even more unforgettable adventures. Enjoy the refreshing climate, immerse yourself in the local culture, and explore every corner of this beautiful region at your own pace!
