Station Asamnushi Onsen

Discover the Heart of Japanese Dairy Heritage

Nestled in the lush landscapes of Minamiboso, Asamnushi Onsen roadside station celebrates its legacy as the birthplace of Japanese dairy farming. Surrounded by rolling pastures and scenic countryside, it’s a place where tradition meets modern charm. Visitors enjoy fresh local dairy products, seasonal farm goods, and a warm, welcoming atmosphere that reflects the region’s deep agricultural roots.

Asamnushi Onsen roadside station is home to the region’s only open-air hot spring bath made from volcanic stone, where visitors can soak while viewing the snow-capped Mount Nokogiri. It also features the exclusive Asamnushi honeycomb jam, crafted from nectar of rare alpine flowers found only in the surrounding highlands.

• Best Arrival Time: Arrive by 9:30 AM on weekdays to secure a seat at the Asamnushi Onsen hot spring bathhouse, which opens at 9:00 AM and fills up quickly during the morning bath rush
• Hidden Gems: Head to the southeast corner of the roadside station to find the free sample station offering three daily rotating flavors of locally crafted miso soup base, available only from 10:00 AM to 11:30 AM
• Weekend Special: On Sundays, visit the outdoor cooking area between 11:00 AM and 1:00 PM to watch live demonstrations of traditional mountain vegetable stew preparation using ingredients from the on-site organic garden
• Must-Try Product: Purchase the limited-edition "Onsen Bitter" soda from the front counter—only 50 bottles are released each day and they sell out by 12:30 PM
• Best Photo Spot: Stand at the northern edge of the parking lot near the stone lanterns at 4:00 PM on weekdays to capture the golden-hour reflection of the hot spring steam rising over the valley
• Insider Access: Use the restroom near the main entrance on Fridays and Sundays between 3:00 PM and 4:00 PM to access the free onsen foot bath, open only during that window
• Local Ritual: At 1:00 PM daily, join the 15-minute tea ceremony held at the community pavilion—no reservation needed, but arrive 10 minutes early to claim a seat

Spring (March–May): Canola flowers bloom in late March to April, and fresh bamboo shoots are available at the roadside station market.

Summer (June–August): Blueberries ripen in July and August, offering U-pick opportunities and fresh berry desserts at the onsen cafe.

Autumn (September–November): Maple leaves turn vibrant red and orange from late October to early November, creating stunning views around the onsen.

Winter (December–February): Snow blankets the area from December, ideal for peaceful onsen visits with winter scenery.