Nasu Highland Park opened a new seasonal floating obstacle course on July 17, giving families another way to cool down during Japan’s summer park season. The attraction, called Water Nasuletic, is scheduled to operate through mid September 2026.
The course is not automatically included for every visitor, and its physical rules are tighter than ordinary park admission. Price, height, weight, age, clothing, and adult supervision all need to be checked before a family builds the attraction into its day.
- Opening window: July 17 through mid September 2026, subject to the park’s operating plan.
- Course: A 35 meter floating obstacle course inside a temporary pool at Forest Plaza Dog Run.
- Price: 2,000 yen with admission only, or 500 yen for Fantasy Pass and annual pass holders.
- Opening offer: Fantasy Pass and annual pass holders enter free through July 31.
- Eligibility: Elementary school age through age 69, at least 110 centimeters tall, and no more than 100 kilograms.
- Gear: A life jacket is mandatory and provided free; swimwear is recommended.
What Opened at Nasu Highland Park
The official Nasu Highland Park notice describes Water Nasuletic as a large floating course installed in the Forest Plaza Dog Run area. Its Japanese name combines Nasu with the idea of an athletic obstacle course.
The temporary pool measures about 35 meters long, 19 meters wide, and 1.3 meters high, with a published water depth of 1.1 meters. Inflatable stages create several challenge levels, allowing visitors to cross, climb, balance, and move between sections above the water.
The operator says flat sections use anti entrapment netting intended to stop participants from becoming caught underneath. The company calls that configuration a domestic first based on its own June 2026 research, so visitors should read it as an operator claim rather than an independent national certification.
The new attraction is seasonal rather than a permanent ride. Its scheduled mid September finish is still listed as provisional, which means weather, maintenance, or a revised park calendar could shorten or alter the operating window.
The Price Depends on the Ticket Already Held
A visitor entering the park without an eligible pass pays 2,000 yen for Water Nasuletic. A Fantasy Pass or annual pass holder normally pays 500 yen, but the park’s opening campaign makes admission free for those passholders through July 31.
That temporary discount creates the clearest immediate planning decision. A family visiting before August should confirm each person’s pass type at checkout, because park admission by itself does not qualify for the free offer.
The operator’s rules describe the 500 yen rate by pass status, not by age. Families should therefore budget per eligible participant and verify whether the attraction ticket is bought online, at the park, or at a dedicated entrance on their visit date.
Travel Watch independently reported the July 17 opening, the course dimensions, the two price levels, and the July passholder promotion. Its report also confirms that visitors can rent or buy some basic items on site, which reduces the risk of losing the activity because a towel was left at the hotel.
Height, Weight, and Supervision Rules Matter
Water Nasuletic is open from elementary school age through age 69. Participants must be at least 110 centimeters tall and weigh no more than 100 kilograms, so a child who can enter the broader park may still be too short or too young for this course.
Every elementary school child needs an accompanying guardian who is at least 18 and is not a high school student. One guardian may accompany no more than two elementary school children, which can change the plan for larger families or groups traveling with several young participants.
The supervision rule applies to participation, not simply to watching from the side. A family with three elementary school children needs enough qualifying adults if all three intend to enter the obstacle course at the same time.
Visitors should measure children before leaving home and not rely on a recent estimate. The 110 centimeter minimum is a published access condition, while the 1.1 meter water depth explains why a mandatory life jacket and active adult supervision remain important even on an inflatable course.
What to Wear and Bring
The park recommends swimwear, but it also allows a T shirt with shorts that finish above the knee. Clothing can still be refused if it is dirty or could damage the inflatable equipment, and shorts with exposed zippers are specifically prohibited.
Every participant must wear a life jacket, which the attraction provides without charge. Dedicated changing facilities are available nearby, and the operator says surf shorts, face towels, and bath towels can be purchased on site, with face towel rental also available.
Those services make a spontaneous visit possible, but bringing a swimsuit, dry clothes, a waterproof bag, and a personal towel will be simpler. Shoes, phones, jewelry, eyewear, and loose accessories should be settled before entry according to the staff’s same day instructions.
The attraction is outdoors in a mountain park, so heat is not the only weather issue. Rain, wind, lightning, or a maintenance check can interrupt a water attraction even when the main park remains open, and visitors should verify the operating board before paying.
How It Fits Into a Nasu Highland Park Day
Nasu Highland Park sits in Tochigi Prefecture’s Nasu highlands, where the operator promotes summer temperatures around six degrees Celsius cooler than the Tokyo metropolitan area. That comparison is a broad marketing reference, not a promise about the exact temperature during a booked visit.
The park has roughly 40 attractions, including multiple roller coasters and indoor experiences, so Water Nasuletic can be treated as one timed activity rather than the entire day. Families should place it before a planned changing break and leave enough dry time before returning to rides that require regular clothing or secured footwear.
The course occupies the Forest Plaza Dog Run location, and visitors should use the current park map instead of assuming it is near the main gate. Confirm the route, changing room, ticket point, and any locker arrangement as soon as the group arrives.
Travelers comparing this stop with other park visits can use Deep Arrival’s theme parks planning directory for broader itinerary context. The new attraction’s own ticket and eligibility rules should still be checked directly with Nasu Highland Park on the day of travel.
Make the Participation Decision Before Arrival
Start with the shortest participant in the group, then check ages and the number of qualifying adults. If every child clears 110 centimeters but the adult to child ratio fails, the family will need to split into turns or remove someone from the activity plan.
Next, compare the attraction price with the ticket already being purchased for the park. The free offer through July 31 makes an eligible Fantasy Pass or annual pass more valuable, but it should not drive a larger ticket purchase unless the rest of that pass also fits the visit.
Finally, pack for both water and the rest of the park. A dry change of clothes, a sealable wet bag, and a confirmed locker plan keep one summer attraction from disrupting the remaining rides, meals, and return trip.
| Visitor situation | Best move | Check first |
|---|---|---|
| Fantasy Pass or annual pass visit by July 31 | Use the opening promotion | Pass eligibility for every participant |
| Admission only | Budget 2,000 yen per participant | Same day availability and purchase point |
| Elementary school children | Assign participating adults | One qualifying guardian for no more than two children |
| Child close to the limit | Measure before travel | 110 centimeter minimum |
| Visit after August | Recheck the park calendar | Provisional mid September closing date |
Check the whole group before purchase. Age, height, weight, and the guardian ratio can exclude an otherwise ticketed participant, so eligibility should be settled before the course becomes a promised part of the family day.
Build in a clothing reset. The course is designed to get participants wet, and changing facilities help, but dry clothes and a wet bag are still the simplest way to protect the rest of the park itinerary.
When is Water Nasuletic open?
Nasu Highland Park lists the seasonal attraction from July 17 through mid September 2026, with the finish date described as provisional.
How much does the attraction cost?
The listed price is 2,000 yen for visitors with admission only and 500 yen for Fantasy Pass or annual pass holders. Eligible passholders enter free through July 31.
What are the height and weight limits?
Participants must be at least 110 centimeters tall and weigh no more than 100 kilograms.
Can elementary school children participate alone?
No. Each elementary school child needs a participating guardian who is at least 18 and is not a high school student, with no more than two children per guardian.
Is swimwear required?
Swimwear is recommended, but a T shirt and above the knee shorts may be accepted. Exposed zippers are prohibited, and every participant must wear the free provided life jacket.
