Nasu Heisei no Mori (Tochigi Prefecture) Complete Guide｜Experiencing Nature and Access Information at the Former Imperial Villa Forest
Nasu Heisei no Mori, which spreads across Nasu Town in Nasu District, Tochigi Prefecture, is a vast forest of approximately 560 hectares (equivalent to about 120 Tokyo Domes) that was long managed as imperial villa grounds. Since opening to the public in May 2011 (Heisei 23), it has become a cherished spot among nature enthusiasts and families as a valuable destination where visitors can experience a rich natural environment with diverse flora and fauna, including rare species.
This article provides comprehensive information you should know before visiting, covering the charm of Nasu Heisei no Mori, characteristics of its two areas, seasonal enjoyment, access methods, and recommended nearby spots.
What is Nasu Heisei no Mori? The Special Value of the Former Imperial Villa Forest
Nasu Heisei no Mori is located within Nikko National Park and spreads across a natural, forested region at the base of the Nasu mountain range. It is also known as a place where Emperor Showa enjoyed nature observation, and a special environment has been preserved that was previously off-limits to the general public.
Historical Background and Transition to Public Access
This forest has been managed as imperial villa grounds since the Meiji period and was carefully protected as a place of rest for imperial family members. In 2008 (Heisei 20), based on the then-Emperor’s vision of “utilizing the forest for the public to experience nature,” a decision was made to open approximately 560 hectares to the nation. Following preparations by the Ministry of the Environment, public opening as “Nasu Heisei no Mori” began in May 2011 (Heisei 23).
Richness of the Ecosystem
Because the forest remained largely untouched by human activity for many years while being protected, Nasu Heisei no Mori is home to diverse organisms, including rare species. Natural forests centered on Mizunara (Japanese oak) and beech trees spread throughout, and mammals and birds such as Japanese black bears, Japanese serows, and Chinese pheasants have been confirmed, along with valuable insects and plants.
This high biological diversity is the result of long-term appropriate management and protection, making it a precious location where visitors can experience an environment close to primeval forest—rare in modern-day Japan.
Characteristics and Enjoyment of Two Areas
Nasu Heisei no Mori is divided into two areas—”Fureai no Mori” (Forest for Interaction) and “Manabi no Mori” (Forest for Learning)—depending on usage purposes. Each area is developed with different concepts, allowing visitors to enjoy nature experiences tailored to their needs.
Fureai no Mori｜Free Exploration Area
Overview
Fureai no Mori is an area where visitors can freely explore without reservations. Well-maintained walking trails stretch for approximately 2 kilometers, allowing anyone to easily enjoy forest bathing and nature observation.
Main Attractions
- Komadome Falls：A signature scenic spot of Nasu Heisei no Mori. This beautiful waterfall has a drop of approximately 20 meters and was known as a “phantom waterfall” that could only be seen by imperial villa staff. A walking trail leads to the falls, accessible in about 30 minutes one way.
- Mizunara Forest：An area where century-old Mizunara giant trees stand in rows. Walking through the forest, visitors can experience the atmosphere of rich natural woodland.
- Bird Watching Spots：Observation points are scattered throughout where various birds can be seen year-round. Bringing binoculars allows for more fulfilling birdwatching.
Time Required
Approximately one and a half to two hours for the basic round-trip course to Komadome Falls. Allow two to three hours if observing nature leisurely while walking.
Manabi no Mori｜Guided Walk Exclusive Area
Overview
Manabi no Mori is a special area prioritizing environmental conservation where entry is only permitted with explanations from interpreters (forest guides)—specialized staff. More primeval natural environments are preserved here, making deeper nature experiences possible.
Characteristics of Guided Walks
- Advance Reservation Required：Due to limited capacity, reservations through the official website or phone are necessary (early reservations are especially recommended during holidays and peak seasons).
- Expert Guide Explanations：Experienced interpreters guide visitors from multiple perspectives, including plants, animals, geology, and history.
- Small Group Format：To minimize environmental impact, each tour is conducted with small numbers of participants.
Program Examples
- Standard guided walk (approximately 3 hours)
- Early morning birdwatching
- Season-limited special programs (autumn foliage tours, winter forest explorations, etc.)
Participation Fees
Approximately 1,500 yen for adults and 500 yen for children (fees may vary by program).
Nasu Heisei no Mori Field Center｜Utilizing the Headquarters Facility
The Field Center, located at the entrance of Nasu Heisei no Mori, is an important facility serving as a visitor hub.
Facility Functions
Exhibition Space
An exhibition corner where visitors can learn about the nature, history, and ecosystem of Nasu Heisei no Mori. Large-screen video presentations and displays of flora and fauna specimens are available, making it ideal for preparing before walking the forest.
Information Counter
Distribution of walking maps, information about current weather and road conditions, and reception for guided walks. Staff respond courteously, so first-time visitors can feel at ease.
Rest Area
Available for resting after exploration or waiting during rainy weather.
Operating Hours and Closures
- Operating Hours：9:00 AM–5:00 PM (last entry 4:30 PM)
- Closed Days：Wednesdays (following day if Wednesday is a holiday), year-end and New Year period (December 29–January 3)
- Admission：Free (guided walks require separate fees)
※Operating hours may change seasonally; checking the official website before visiting is recommended.
Charm Through the Seasons｜Best Seasons to Visit
Nasu Heisei no Mori displays different faces throughout the year. Here are the characteristics of each season.
Spring (April–June)
A season when the forest awakens with snowmelt. Fresh greenery is beautiful, and spring flowers such as Katakuri and Iwauchiwa bloom in profusion. Bird songs become active, making it an ideal time for birdwatching.
Highlights：Spring flowers, fresh greenery, breeding season birds
Summer (July–August)
The forest enveloped in deep green is an ideal environment for escaping the heat. Due to its elevation, temperatures are 5–10 degrees cooler than lowland areas, allowing comfortable exploration. The negative ions from Komadome Falls are particularly pleasant during this season.
Highlights：Deep green foliage, cool air, refreshing waterfall
Autumn (September–November)
The season when Nasu Heisei no Mori is most vibrant. Mizunara, beech, and maple trees change color, painting the entire forest in golden and crimson hues. Mid-to-late October marks the autumn foliage peak, when guided walk reservations become particularly competitive.
Highlights：Autumn foliage, autumn fruits, clear air
Winter (December–March)
A silent forest covered in snow. Some areas may close due to snow accumulation during winter, though special programs using snowshoes are sometimes offered. Winter-specific nature experiences such as observing animal tracks are possible.
Highlights：Snow scenery, animal traces, winter bud observation
Access Methods｜How to Reach by Car or Public Transportation
Accessing by Car
From Tokyo Area
- Approximately 40 minutes from Nasu IC on the Tohoku Expressway (approximately 25 km)
- Approximately 40 minutes from Nasu Kogen Smart IC (ETC only) on the Tohoku Expressway
Route
After exiting at Nasu IC or Nasu Kogen Smart IC, head north on Prefectural Route 17 (Nasu Kogen Line) toward Nasu Yumoto. After passing through Nasu Yumoto, continue further to spot signage for Nasu Heisei no Mori Field Center.
Parking Information
- Capacity: Approximately 50 spaces
- Fee: Free
- Note: Congestion is common on holidays and during peak seasons; arriving in early morning hours is recommended.
Public Transportation Access
Train and Bus
- Get off at Nasu Shiosara Station on the Tohoku Shinkansen
- Board the Tonoko Bus heading to “Nasu Yumoto” (approximately 70 minutes)
- Get off at “Nasu Yumoto” bus stop, then take a taxi for approximately 15 minutes
Or
- Get off at Kuroiso Station on the Tohoku Main Line
- Board the Tonoko Bus heading to “Nasu Yumoto” (approximately 40 minutes)
- Get off at “Nasu Yumoto” bus stop, then take a taxi for approximately 15 minutes
Important Notes
No direct bus service runs from Nasu Yumoto to the Field Center, so taxi use is standard. It’s wise to note down taxi company contact information beforehand for peace of mind.
Address and Contact Information
- Address：〒325-0301 Takaku-Hei 3254, Nasu Town, Nasu District, Tochigi Prefecture
- Phone：0287-74-6808 (Nasu Heisei no Mori Field Center)
- FAX：0287-74-6809
Precautions When Visiting and Packing List
Clothing and Equipment
Basic Equipment
- Comfortable walking shoes (trekking shoes or athletic shoes recommended)
- Long-sleeved shirt and long pants (to prevent insect bites and plant irritation)
- Hat
- Rain jacket (mountain weather changes quickly)
Additional Equipment by Season
- Spring/Autumn: Warm layers (mornings and evenings cool down)
- Summer: Sunscreen, insect repellent spray, water
- Winter: Warm clothing, gloves, warm hat
Items to Bring
- Drinks (vending machines are limited; bringing your own is recommended)
- Snacks (rice balls, chocolate, etc.)
- Towel
- Camera, binoculars (for birdwatching)
- Garbage bag (trash must be taken with you)
Etiquette and Rules
- No Harvesting of Flora or Fauna：Collecting and taking away flowers or insects is strictly prohibited.
- Take All Trash Away：Do not leave garbage in the forest.
- Stay on Designated Trails：To protect the environment, do not leave the walking paths.
- No Feeding Wildlife：To protect animal ecosystems, never feed animals.
- No Smoking：The entire facility is non-smoking to prevent forest fires.
- No Pets：Pets are not permitted due to their potential impact on wildlife.
Recommended Spots Around Nasu Heisei no Mori
Visiting nearby tourist spots in addition to Nasu Heisei no Mori creates a more fulfilling Nasu trip experience.
Chausudake (Nasu Mountain)
The main peak of the Nasu mountain range at 1,915 meters elevation. Located approximately 20 minutes by car from Nasu Heisei no Mori, the Nasu Ropeway allows reaching the summit in approximately 50 minutes from the upper station. The rugged landscape characteristic of an active volcano and panoramic views of the Nasu plateau are its charms.
Nasu Ropeway
A ropeway connecting the 9th station (1,390 meters elevation) of Chausudake to the summit station (1,684 meters elevation) in approximately 4 minutes. Popular with hiking beginners and families, it provides an easy way to experience high-altitude atmosphere.
Sessho Stone
A rocky outcrop area in Nasu Yumoto. Volcanic gas emissions create a barren landscape where vegetation does not grow. Known for the legendary nine-tailed fox, it’s a unique spot where history and nature merge.
Nasu Hot Spring Area
Multiple hot springs known as the Nasu Seven Hot Springs are scattered throughout. Soaking in hot springs after exploring Nasu Heisei no Mori is also recommended. Day-use bathing facilities are plentiful.
Hotels and Accommodations Near Nasu Heisei no Mori
Omaru Onsen Ryokan
A historic hot spring inn located at the innermost point of the Nasu hot spring area. Famous for its rustic open-air bath, allowing guests to enjoy hot springs while soaking in Nasu’s nature. Approximately 25 minutes by car from Nasu Heisei no Mori.
Grand Hotel Aisu
A large resort hotel positioned in the center of Nasu Plateau. With hot springs, pools, restaurants, and other facilities, it’s ideal for family stays. Access to Nasu Heisei no Mori is also convenient.
Nasu Plateau Forest Pensions
Numerous quiet pensions nestled in forests are available. With a homey atmosphere and owner-crafted cuisine as highlights, these are recommended for nature-oriented guests.
Frequently Asked Questions (FAQ)
Q1: Can Nasu Heisei no Mori be enjoyed on rainy days?
Exploration is possible in rain, but caution is necessary as trails become slippery. Visitors can also view Field Center exhibits or wait for weather to improve. Guided walks may be canceled during severe weather, so advance confirmation is advised.
Q2: Can young children explore the trails?
Fureai no Mori trails are well-maintained, so children in elementary school and above can walk without issue. However, stroller use is difficult in some areas; baby carriers are recommended. Some guided walks in Manabi no Mori may have age restrictions, so check when reserving.
Q3: How congested is the parking lot?
During autumn foliage season (mid-to-late October) and major holidays, the parking lot may reach full capacity. Aiming to arrive by 9 AM typically ensures smoother parking.
Q4: When can guided walk reservations be made?
Reservations begin approximately one month in advance on the official website. Popular programs fill quickly, so early reservations are recommended once your visit date is decided.
Q5: Is the facility open during winter?
Winter operation continues, though some areas may close depending on snow conditions. Special programs using snowshoes are sometimes offered. Check the official website for the latest information before visiting.
Q6: Is photography freely permitted?
Personal photography is allowed freely. However, commercial photography and drone use require advance permission. Photography should respect the privacy of other visitors.
Conclusion｜Experience Special Nature at Nasu Heisei no Mori
Nasu Heisei no Mori, once protected as imperial villa grounds, is an approximately 560-hectare vast forest where visitors can experience a rich ecosystem including rare species. Two areas—”Fureai no Mori” for free exploration and “Manabi no Mori” for guided experiences—allow visitors to enjoy nature suited to their needs.
The forest displays different faces through the seasons—spring’s fresh greenery, summer’s deep green, autumn’s foliage, and winter’s snow—with new discoveries available whenever visited. Komadome Falls especially captivates visitors as a signature landscape of Nasu Heisei no Mori.
Its accessibility, approximately two and a half hours from Tokyo and about 40 minutes from Nasu IC, is also appealing. Combining it with other Nasu attractions and hot springs creates an enriching travel plan.
Nasu Heisei no Mori allows visitors to experience the beauty of a forest once cherished by imperial family members while respecting nature. When visiting Tochigi Prefecture, be sure to visit this location. Touching this rich nature will help you forget daily hustle and bustle, refreshing both body and mind.
